Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

SS-M2F8 Female Thread Two-Valve Manifold
SS-M2F8 Type Five-Valve Manifold
QF-05 Type Instrument Balancing Valve
1151 Type Integrated Two-Valve Manifold
SF-2B Integral Three-Valve Manifold
EF-2 Two-Valve Manifold
FDF5-12 1151 Type Five-Valve Manifold
WF-3 Type Five-Valve Manifold
J23SA Three-Valve Manifold
QFF3 Three-Valve Manifold
SS-M2F8 Female Thread Two-Valve Manifold
1151 Type Three-Valve Manifold
3051 integrated three valve group
3051 integrated five valve group
SS-M5F8-FL Flange Five-Valve Manifold
1151 Type Three-Valve Manifold
EF-2 Two-Valve Manifold
WF1 Type Five-Valve Manifold
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Phone：+86（577）6730 7899
Mobile：+86 1815 7711 652
Fax：+86（577）6738 7099
Email：merry@kaiweixi.com
Address：No. 1 Linxia Road, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province, China
Website：https://www.kaiweixi.com

Needle valve manifold (instrument manifold)

Needle Valve Manifold and Instrument Manifold Models: 1151 / EF-2 / 1151T / SS-M2F8 / J23SA / QFF3 / WF-3 / WF-1 / WF-2 / SS-M5F8 / SF-2B / QFF3 / QF-05 / 3051 A needle valve manifold (instrument manifold) is a combined valve assembly that integrates multiple shut-off valves or pressure tapping valves into a single unit, specifically designed for use with field instruments such as differential pressure transmitters and pressure transmitters. Its core functions include pressure transmission, connection, shut-off, balancing, and venting/draining between the instrument and the process pipeline. The manifold typically consists of two, three, or five individual valves (e.g., high-pressure valve, low-pressure valve, balancing valve, drain valve) integrated into a single valve body with precision-engineered internal flow paths. Common types include two-valve manifolds, three-valve manifolds, and five-valve manifolds:Two-valve manifold: Consists of two shut-off valves (high-pressure side and low-pressure side) and is used for simple pressure measurement.Three-valve manifold: Adds a balancing valve to the two-valve design. It is used for installation, zero adjustment, or removal of differential pressure transmitters, effectively preventing sensor damage due to single-side overpressure.Five-valve manifold: Adds two drain/test valves to the three-valve design, offering more comprehensive functionality for draining, flushing, and calibration.Compared with traditional discrete single valves, manifolds greatly simplify piping connections and reduce potential leak points. They are compact, occupy less space, and offer good rigidity and vibration resistance. The valve body is typically made of stainless steel (304/316L), and sealing options include PTFE or graphite. The needle valve manifolds produced by Kaivex Valve Group are widely used in industries such as petroleum, chemical, electric power, and metallurgy, and are installed directly between the transmitter and the flange or impulse line.

SS-M2F8 Female Thread Two-Valve Manifold

Model：
SS-M2F8-160P/EN5-1 SS-M2F8-320P
Specification：
DN6-DN40
Pressure：
16Mpa-32 Mpa
Material：
forged steel, stainless steel

The SS-M2F8 Female Thread Two-Valve Manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters and pressure transmitters, integrating two isolation valves into one compact body to connect the high and low pressure sides of the transmitter. Through precision internal flow path design, it enables connection, isolation, and equalization operations between the transmitter and process pipelines. Featuring female thread connections, reliable sealing, and easy installation, this manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, and draining/venting. It serves as a critical transmitter accessory in industries such as petrochemical, power generation, metallurgy, and pharmaceuticals, ensuring safe isolation and precise control of measurement systems.Product Drawing of SS-M2F8 Female Thread Two-Valve Manifold

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SS-M2F8 Type Five-Valve Manifold

Model：
SS-M5F8-FL-200P/EN5-13 SS-M5F8-FL-400P
Specification：
DN5
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The SS-M2F8 five-valve manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters, integrating two isolation valves (high pressure and low pressure), two drain/vent valves, and one equalizing valve into one compact body. Featuring female threaded connections (typically NPT 1/2” female threads) and precision internal flow paths, it enables connection or isolation between the transmitter's high/low pressure chambers and the impulse lines, equalization between the two chambers, and draining/venting of accumulated condensate, gas, or impurities inside the manifold. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, draining/venting, and system venting. Its core purpose is to achieve safe isolation of differential pressure, flow, or level measurement systems, online transmitter maintenance, and draining/venting without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.Product Drawing of SS-M2F8 Type Five-Valve Manifold

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QF-05 Type Instrument Balancing Valve

Model：
QF-05-200P/QF-05-400P
Specification：
DN5
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The QF-05 instrument equalizing valve is an instrument valve specifically designed for use with differential pressure transmitters. Through its independent equalizing valve structure, it enables rapid connection and isolation between the high and low pressure chambers of the transmitter. This valve typically features female threaded connections (e.g., NPT 1/2” or M20×1.5) and can be used in conjunction with isolation valves on impulse lines. This valve is primarily used for online zero calibration and equalizing operations of differential pressure transmitters. Its core purpose is to quickly equalize the pressure between the two chambers without interrupting process operation, facilitating transmitter zero calibration and ensuring the accuracy and continuous stable operation of differential pressure, flow, or level measurement systems.Product Drawing of QF-05 Type Instrument Balancing Valve

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1151 Type Integrated Two-Valve Manifold

Model：
1151-320P
Specification：
DN5
Pressure：
32Mpa
Material：
stainless steel,Forged stainless steel

The 1151 Type Integrated Two-Valve Manifold is an integrated instrument manifold specifically designed for use with 1151 series pressure transmitters (or single-side impulse line of differential pressure transmitters) , integrating two stop valves (one isolation valve and one drain/vent valve) into one compact body. This manifold typically features female threaded connections (e.g., NPT 1/2”). Through precision internal flow path design, it enables connection or isolation between the pressure transmitter and the impulse line, as well as draining/venting of accumulated condensate, gas, or impurities inside the manifold. This manifold is primarily used for pressure transmitter root isolation, online zero calibration, draining/venting, and system venting. Its core purpose is to achieve safe isolation of pressure measurement systems, online transmitter maintenance, and draining/venting without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.Product Drawing of 1151 Type Integrated Two-Valve Manifold

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SF-2B Integral Three-Valve Manifold

Model：
SF-2B-16P/SF-2B-25P/SF-2B-40P/SF-2B-64P/SF-2B-10P/SF-2B-160P/SF-2B-320P
Specification：
DN5
Pressure：
1.6Mpa-32Mpa
Material：
stainless steel

The SF-2B integrated three-valve manifold is a high-performance instrument valve set specifically designed for use with differential pressure transmitters, integrating high-pressure valve, low-pressure valve, and equalizing valve into one compact body. Through precision internal flow path design, it enables connection, isolation, and equalization operations between the differential pressure transmitter and process pipelines, ensuring safety and measurement accuracy during online maintenance, zero calibration, and commissioning. The manifold features an integrated structure with reliable sealing and easy installation, serving as an indispensable instrument accessory in differential pressure measurement systems across petroleum, chemical, power generation, and pharmaceutical industries.Product Drawingof SF-2B Integral Three-Valve Manifold

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EF-2 Two-Valve Manifold

Model：
EF-2-200P/EF-2-400P
Specification：
DN5
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The EF-2 two-valve manifold is an integrated instrument manifold specifically designed for use with pressure transmitters, pressure gauges, and differential pressure transmitters, integrating two isolation valves into one compact body. Through precision internal flow path design, it enables connection, isolation, and draining/venting operations between the instrument and process pipelines. Featuring threaded or flanged connections (depending on model configuration), reliable sealing, and easy installation, this manifold is primarily used for pressure instrument root isolation, online calibration, and draining/venting. It serves as a critical instrument accessory in industries such as petrochemical, power generation, metallurgy, and pharmaceuticals, ensuring safe isolation and precise control of measurement systems.Product Drawing of EF-2 Two-Valve Manifold

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FDF5-12 1151 Type Five-Valve Manifold

Model：
FDF5-12 1151-200P/FDF5-12 1151-400P
Specification：
DN5
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The FDF5-12 1151 type five-valve manifold is an integrated instrument manifold specifically designed for use with 1151 series differential pressure transmitters, integrating two isolation valves (high pressure and low pressure), two drain/vent valves, and one equalizing valve into one compact body. This manifold typically features female threaded or flanged connections. Through precision internal flow path design, it enables connection or isolation between the transmitter‘s high/low pressure chambers and the impulse lines, equalization between the two chambers, and draining/venting of accumulated condensate, gas, or impurities inside the manifold. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, draining/venting, and system venting. Its core purpose is to achieve safe isolation of differential pressure, flow, or level measurement systems, online transmitter maintenance, and draining/venting without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.Product Drawing of FDF5-12 1151 Type Five-Valve Manifold

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WF-3 Type Five-Valve Manifold

Model：
SS-M5F8-FL-200P/SS-M5F8-FL-400P
Specification：
DN5
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The WF-3 five-valve manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters, integrating two isolation valves (high pressure and low pressure), two drain/vent valves, and one equalizing valve into one compact body. This manifold typically features female threaded or flanged connections. Through precision internal flow path design, it enables connection or isolation between the transmitter‘s high/low pressure chambers and the impulse lines, equalization between the two chambers, and draining/venting of accumulated condensate, gas, or impurities inside the manifold. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, draining/venting, and system venting. Its core purpose is to achieve safe isolation of differential pressure, flow, or level measurement systems, online transmitter maintenance, and draining/venting without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.、Product Drawing of WF-3 Type Five-Valve Manifold

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J23SA Three-Valve Manifold

Model：
J23SA-64P/J23SA-160P
Specification：
DN5
Pressure：
64Mpa-160Mpa
Material：
forged steel, stainless steel

The J23SA three-valve manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters, integrating two isolation valves (high pressure and low pressure) and one equalizing valve into one compact body. This manifold features female threaded connections (typically NPT 1/2” or M20×1.5). Through precision internal flow path design, it enables connection or isolation between the transmitter‘s high/low pressure chambers and the impulse lines, as well as equalization between the two chambers. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, and system venting. Its core purpose is to achieve safe isolation of differential pressure, flow, or level measurement systems and online transmitter maintenance without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.Product Drawing of J23SA Three-Valve Manifold

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QFF3 Three-Valve Manifold

Model：
QFF3-16P
Specification：
DN6
Pressure：
16Mpa
Material：
stainless steel, forged stainless steel

The QFF3 three-valve manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters, integrating two isolation valves (high pressure and low pressure) and one equalizing valve into one compact body. This manifold typically features female threaded connections (e.g., NPT 1/2” or M20×1.5). Through precision internal flow path design, it enables connection or isolation between the transmitter‘s high/low pressure chambers and the impulse lines, as well as equalization between the two chambers. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, and system venting. Its core purpose is to achieve safe isolation of differential pressure, flow, or level measurement systems and online transmitter maintenance without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.

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SS-M2F8 Female Thread Two-Valve Manifold

Model：
SS-M2F8-16P/SS-M2F8-32P
Specification：
DN6-DN40
Pressure：
PN16-PN32
Material：
stainless steel, forged stainless steel

The SS-M2F8 Female Thread Two-Valve Manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters and pressure transmitters, integrating two isolation valves into one compact body to connect the high and low pressure sides of the transmitter. Through precision internal flow path design, it enables connection, isolation, and equalization operations between the transmitter and process pipelines. Featuring female thread connections, reliable sealing, and easy installation, this manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, and draining/venting. It serves as a critical transmitter accessory in industries such as petrochemical, power generation, metallurgy, and pharmaceuticals, ensuring safe isolation and precise control of measurement systems.Product Drawing of SS-M2F8 Female Thread Two-Valve Manifold

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1151 Type Three-Valve Manifold

Model：
1151-320P
Specification：
DN6
Pressure：
32Mpa
Material：
carbon steel, stainless steel

The 1151 type three valve group is an instrument valve assembly specifically designed for use with differential pressure transmitters, consisting of two globe valves (high pressure valve, low pressure valve) and a balance valve integrated into one. Through precise internal flow channel design, it can achieve connection, disconnection, and balancing operations between differential pressure transmitters and process pipelines, ensuring the safety and accuracy of differential pressure transmitters during online maintenance, zero calibration, and commissioning processes. The valve group has a compact structure and reliable sealing, making it an indispensable instrument accessory in industrial automation control systems. Widely used in petrochemical, power, metallurgy, pharmaceuticals, food, and general industrial process control systems, it is paired with differential pressure transmitters for measuring parameters such as flow rate, liquid level, and pressure. Especially suitable for differential pressure measurement applications that require online maintenance, zero point calibration, and high reliability, it is a key auxiliary equipment to ensure the safe operation and measurement accuracy of differential pressure transmitters.1151 Type Three-Valve Manifold product diagram

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3051 integrated three valve group

Model：
3051-160/3051-160P/3051-320P/3051-320R
Specification：
DN5/DN6
Pressure：
16Mpa
Material：
carbon steel, stainless steel

The 3051 integrated three valve group is a high-performance instrument valve group designed specifically for use with the 3051 series differential pressure transmitter. It consists of three independent valves: a high-pressure valve, a low-pressure valve, and a balancing valve, integrated into a compact valve body. It achieves the connection, disconnection, and balancing operation between differential pressure transmitters and process pipelines through precise internal flow channel design, ensuring the safety and measurement accuracy of transmitters during online maintenance, zero point calibration, and commissioning processes. This valve group adopts an integrated structure with reliable sealing, making it an ideal supporting equipment for differential pressure measurement in industrial automation control systems. Widely used in petrochemical, power, metallurgy, pharmaceuticals, food, and general industrial process control systems, it is paired with 3051 series differential pressure transmitters for measuring parameters such as flow rate, liquid level, and pressure. Especially suitable for differential pressure measurement applications that require online maintenance, zero point calibration, and high reliability, it is a key auxiliary equipment to ensure the safe operation and measurement accuracy of differential pressure transmitters. Product Drawing of 3051 integrated three valve group

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3051 integrated five valve group

Model：
3051-160/3051-160P/3051-320P/3051-320R/
Specification：
DN5/DN6
Pressure：
PN16-PN40
Material：
carbon steel, stainless steel

The 3051 integrated five valve group is a high-performance instrument valve group designed specifically for use with the 3051 series differential pressure transmitter. Based on the standard three valve group (high pressure valve, low pressure valve, balance valve), it integrates two drain/condensate valves to form a five valve integrated structure. It achieves the connection, disconnection, and balancing operation between the differential pressure transmitter and the process pipeline through precise internal flow channel design. At the same time, it has online drainage, condensate drainage, and sampling functions to ensure the safe operation and measurement accuracy of the transmitter under complex working conditions. This valve group adopts an integrated structure with reliable sealing, and is a high-end supporting equipment for differential pressure measurement in industries such as petroleum, chemical, and power. Widely used in petrochemical, power, metallurgy, pharmaceuticals, food, and general industrial process control systems, it is paired with 3051 series differential pressure transmitters for measuring parameters such as flow rate, liquid level, and pressure.Product Drawing of 3051 integrated five valve group

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SS-M5F8-FL Flange Five-Valve Manifold

Model：
SS-M2F8-FL-20P/ SS-M2F8-FL-40P
Specification：
DN6
Pressure：
PN20-PN40
Material：
forged steel, stainless steel

The SS-M5F8-FL flange-type five-valve manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters, integrating two isolation valves, two drain/vent valves, and one equalizing valve into one compact body. This manifold features flange connections, allowing direct bolting to transmitter and process pipeline flanges for stable and reliable installation. Through precision internal flow path design, it enables connection, isolation, equalization, and draining/venting operations between the transmitter’s high/low pressure chambers and process pipelines. This valve manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, draining/venting, and system venting. It serves as a critical transmitter accessory in industries such as petrochemical, power generation, metallurgy, and pharmaceuticals, particularly suitable for applications requiring flange connections, high temperature, high pressure, and complex media, ensuring safe, accurate, and long-term stable operation of differential pressure measurement systems.Product Drawing of SS-M5F8-FL Flange Five-Valve Manifold

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1151 Type Three-Valve Manifold

Model：
1151-320P
Specification：
DN5
Pressure：
32Mpa
Material：
stainless steel, section stainless steel

The 1151 type three-valve manifold is an integrated instrument manifold specifically designed for use with 1151 series differential pressure transmitters, integrating two isolation valves (high pressure and low pressure) and one equalizing valve into one compact body. Featuring female threaded or flanged connections and precision internal flow paths, it enables connection or isolation between the transmitter’s high/low pressure chambers and the impulse lines, as well as equalization between the two chambers. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, and system venting. Its core purpose is to ensure that differential pressure, flow, or level measurement systems can safely and conveniently perform online zero calibration, draining/venting, and isolation maintenance of the transmitter without interrupting process operation, thereby guaranteeing continuous and stable operation of automated control systems.Product Drawing of 1151 Type Three-Valve Manifold

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EF-2 Two-Valve Manifold

Model：
EF-2-200P/EF-2-400P
Specification：
DN5
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The EF-2 two-valve manifold is an integrated instrument manifold specifically designed for use with pressure transmitters, pressure gauges, and differential pressure transmitters, integrating two isolation valves into one compact body. Through precision internal flow path design, it enables connection, isolation, and draining/venting operations between the instrument and process pipelines. Featuring threaded or flanged connections (depending on model configuration), reliable sealing, and easy installation, this manifold is primarily used for pressure instrument root isolation, online calibration, and draining/venting. It serves as a critical instrument accessory in industries such as petrochemical, power generation, metallurgy, and pharmaceuticals, ensuring safe isolation and precise control of measurement systems.Product Drawing of EF-2 Two-Valve Manifold

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WF1 Type Five-Valve Manifold

Model：
WF-3-200P/ WF-3-400P
Specification：
DN6
Pressure：
20Mpa-40Mpa
Material：
stainless steel, forged stainless steel

The WF1 type five-valve manifold is an integrated instrument manifold specifically designed for use with differential pressure transmitters, integrating two isolation valves (high pressure and low pressure), two drain/vent valves, and one equalizing valve into one compact body. This manifold typically features female threaded connections (e.g., NPT 1/2”). Through precision internal flow path design, it enables connection or isolation between the transmitter‘s high/low pressure chambers and the impulse lines, equalization between the two chambers, and draining/venting of accumulated condensate, gas, or impurities inside the manifold. This manifold is primarily used for differential pressure transmitter root isolation, online zero calibration, equalizing operations, draining/venting, and system venting. Its core purpose is to achieve safe isolation of differential pressure, flow, or level measurement systems, online transmitter maintenance, and draining/venting without interrupting process operation, thereby ensuring continuous, stable operation and measurement accuracy of automated control systems.Product Drawing of WF1 Type Five-Valve Manifold

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

SS-M2F8 Female Thread Two-Valve Manifold

SS-M2F8 Type Five-Valve Manifold

QF-05 Type Instrument Balancing Valve

1151 Type Integrated Two-Valve Manifold

SF-2B Integral Three-Valve Manifold

EF-2 Two-Valve Manifold

FDF5-12 1151 Type Five-Valve Manifold

WF-3 Type Five-Valve Manifold

J23SA Three-Valve Manifold

QFF3 Three-Valve Manifold

SS-M2F8 Female Thread Two-Valve Manifold

1151 Type Three-Valve Manifold

3051 integrated three valve group

3051 integrated five valve group

SS-M5F8-FL Flange Five-Valve Manifold

1151 Type Three-Valve Manifold

EF-2 Two-Valve Manifold

WF1 Type Five-Valve Manifold

More Needle Valve>>

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Needle valve manifold (instrument manifold)

SS-M2F8 Female Thread Two-Valve Manifold

SS-M2F8 Type Five-Valve Manifold

QF-05 Type Instrument Balancing Valve

1151 Type Integrated Two-Valve Manifold

SF-2B Integral Three-Valve Manifold

EF-2 Two-Valve Manifold

FDF5-12 1151 Type Five-Valve Manifold

WF-3 Type Five-Valve Manifold

J23SA Three-Valve Manifold

QFF3 Three-Valve Manifold

SS-M2F8 Female Thread Two-Valve Manifold

1151 Type Three-Valve Manifold

3051 integrated three valve group

3051 integrated five valve group

SS-M5F8-FL Flange Five-Valve Manifold

1151 Type Three-Valve Manifold

EF-2 Two-Valve Manifold

WF1 Type Five-Valve Manifold