Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve
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Phone：+86（577）6730 7899
Mobile：+86 195 1816 9569
Fax：+86（577）6738 7099
Email：Lucas@kaiweixi.com
Address：No. 1, Linxia Road, Oubei Street, Yongjia County, Wenzhou City, Zhejiang Province,china
Website：https://www.kaiweixi.com

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ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve

Model：ZJHS-16C/ZJHS-25C/ZJHS-40C/ZJHS-64C/ZJHS-16P/ZJHS-25P/ZJHS-40P/ZJHS-64P/ZJHS-16R/ZJHS-25R/ZJHS-40R/ZJHS-64R
Specification：DN20-DN200
Temperature：-200~500℃
Medium：Common fluids, etc.

Pressure：PN16、PN25、PN40、PN64
Connection method：flange
Driving method：Pneumatic
Material：Cast Steel,Stainless Steel,Duplex Stainless Steel

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ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control ValveOverview

ZJHS compact pneumatic diaphragm angle single-seated control valve is a precision control unit consisting of a multi-spring pneumatic diaphragm actuator and a compact angle-style single-seated valve body. It is specifically designed for flow regulation of media with high pressure drops, high viscosity, or containing suspended particles. The angle-style body features a simple flow path with minimal resistance, effectively utilizing the erosion force of the medium for self-cleaning and preventing fluid accumulation in the cavity. Key internals such as the plug and seat can undergo hardening treatments like Stellite overlay, nitriding, or specialized spraying before or after machining to enhance erosion and wear resistance. The sealing structure offers options for PTFE soft seals or high-hardness metal-to-metal hard seals based on medium pressure and temperature, ensuring strict shut-off while providing excellent dynamic regulation stability. The ZJHS valve is typically installed at piping locations requiring a 90-degree change in fluid direction to precisely regulate physical parameters, ensuring the stable operation of industrial processes. It features a compact structure, light weight, sensitive response, and smooth flow, with a rated flow coefficient generally higher than standard single-seated valves. It is widely used in petroleum, chemical, power, and textile industries for automation systems requiring high precision and durability.

Product Image of ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control ValveCharacteristic

1.Compact and lightweight design:Equipped with a multi-spring pneumatic diaphragm actuator, the overall height is significantly lower than traditional control valves, with a weight reduction of approximately 30%. This saves installation space and reduces pipeline load, making it suitable for compact layouts.
2.Superior angle flow path design:The valve body features a right-angle structure with a smooth flow path and no dead zones, resulting in an extremely low resistance coefficient. This design ensures direct flow and strong self-cleaning capabilities, effectively preventing medium accumulation and scaling, ideal for high-viscosity or particle-laden fluids.
3.Excellent shut-off sealing performance:Utilizing a single-seated sealing structure with precision-ground surfaces, the valve features minimal leakage. It easily meets ANSI Class IV or VI (bubble-tight) sealing standards, serving as the preferred unit for strict process isolation.
4.Stable and reliable top-guiding:The valve plug is supported by a robust top-guided structure with a large guiding area and uniform stress distribution. This maintains high concentricity and vibration resistance throughout the stroke, effectively suppressing mechanical noise and high-frequency whistling caused by fluid impact.
5.High-precision proportional regulation:The plug profile is precision-engineered based on fluid dynamics to provide linear or equal percentage flow characteristics. Paired with a smart positioner, it achieves high repeatability and sensitivity to ensure stable process control under dynamic conditions.
6.Intrinsically safe attributes:Driven by clean compressed air as the power source, it involves no electrical spark risks and possesses natural explosion-proof characteristics. Fail-safe positions (full open or full close) can be configured via built-in spring pressure to protect the system during air supply failure.
7.Erosion resistance and long service life:The body and internals are available in cast steel, stainless steel, and various special alloys. For high pressure drops or harsh media, the sealing surfaces can be hard-faced with Stellite, offering extreme hardness and corrosion resistance to significantly extend service life.
8.Convenient modular maintenance:The refined structure ensures high component interchangeability. Featuring a top-entry design, internal components can be inspected, cleaned, or replaced by vertically extracting the actuator without removing the entire valve from the pipeline, shortening maintenance cycles.

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valvestructure principle

Structural Drawing of ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve

List of Component Names and Materials

Part	Material
Valve body, valve cover	Cast Steel,Stainless Steel,Duplex Stainless Steel
Soft sealing spool	Reinforced PTFE
Gasket	Rubber asbestos board, 1Cr18Ni9Ti, graphite spiral wound gasket
Bellows	Nitrile rubber sandwiched with reinforced polyester fabric
Valve stem, push rod	2Cr13, 1Cr18Ni9Ti
Valve spool, valve seat	1Cr18Ni9Ti, Stellite alloy surfacing
Packing	PTFE, flexible graphite, stainless steel bellows
Diaphragm cover	A3
Spring	60Si2Mn
Bushing	2Cr13

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valvetechnology parameter

Performance Specification Sheet

Performance Specification Sheet
Nominal Pressure	1.6	2.5	4.0	6.4	MPa
Strength test pressure	2.4	3.8	6.0	9.6
Sealing test pressure	1.76	2.8	4.4	7.04
Applicable Temperature	-200-500				℃

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valvestandard size

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard

Outline Drawing of ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve

Outline dimension table(Unit: mm)

Nominal Diameter（DN）			20	25	32	40	50	65	80	100	125	150	200
A			282					360			470
L	PN16		95	100	105	115	125	145	155	175	200	225	275
	PN40		95	100	105	115	125	145	155	175	200	225	275
	PN64		115	115	130	130	150	170	190	215	250	275	325
H	Standard	PN16	349	350	358	378	393	494	503	521	634	696	715
		PN40	349	350	358	378	393	494	503	521	634	696	715
		PN64	350	357	390	398	420	510	542	560	602	700	762
	High Temp Type		444	445	458	478	493	594	628	646	759	846	915
	Bellows Type		419	423	444	478	490	582	624	619	759	840	804
Flange Standard			GB:1.6、2.5、4.0、6.4Mpa ANSI:150、300、600Lb JIS:10K、20K、30K

Note:(1)Height and weight for high-temperature, bellows, and cryogenic types in this table are based on PN16.(2)Height for models with a handwheel should be increased by 152mm (DN20-50), 182mm (DN65-100), 253mm (DN125-200).

Articles related to technology research and development

Dynamic balance electric control valve Patent

The utility model provides a dynamically balanced electric regulating valve, which includes a valve body, a valve cover, a valve rod, a valve core installed inside the valve body and connected to the valve rod, and an actuator installed on the valve cover and connected to the top end of the valve rod. The valve body is internally provided with a water inlet chamber, a valve cavity, and a water outlet chamber in order towards the direction of medium flow. The valve core is in the shape of a bucket with its opening facing downwards. The valve core is located inside the valve cavity and is used for connecting or cutting off between the water inlet chamber and the valve cavity. The top of the valve core is provided with a through port for medium circulation. Above the through port, there is a filter cover detachably connected to the valve core. The valve rod is provided with a step, and the outside of the step is covered with an elastic sleeve that fits it. The top of the filter cover is provided with a fixing hole that fits the elastic sleeve. This utility model can filter the medium, is simple to install, time-saving, labor-saving, and can reduce the medium pressure inside the valve body, extending the service life of the valve core.
1. A dynamic balance electric regulating valve, comprising a valve body, a valve cover, a valve rod, a valve core installed inside the valve body and connected to the valve rod, and an actuator installed on the valve cover and connected to the top end of the valve rod. Its characteristic lies in that the valve body is sequentially provided with an inlet chamber, a valve cavity, and an outlet chamber in the direction of medium flow. The valve core is in the shape of a bucket with an opening facing downwards. The valve core is located inside the valve cavity and is used for connecting or cutting off between the inlet chamber and the valve cavity. The top of the valve core is provided with a port for medium circulation. Above the port, there is a filter cover detachably connected to the valve core. The valve rod is provided with a step, and the outside of the step is covered with an elastic sleeve that fits it. The top of the filter cover is provided with a fixing hole that fits the elastic sleeve.
2. A dynamic balance electric regulating valve according to claim 1, characterized in that the bottom of the valve body is provided with a downward-opening groove, which is connected to the valve cavity through a through hole. A bottom cover connected to the valve body is arranged below the groove, and a pressure relief mechanism is arranged inside the groove. The pressure relief mechanism comprises a force-receiving member, a pressure plate connected to the force-receiving member, and a first spring arranged below the pressure plate and abutting against the bottom cover. The force-receiving member comprises a flow diversion block protruding from the through hole and a connecting rod connected to the flow diversion block, and the connecting rod passes through the pressure plate and is locked and fixed by a nut.
3. A dynamic balance electric regulating valve according to claim 2, characterized in that the top end of the pressure plate is pressed against the top wall of the groove, the bottom of the pressure plate is provided with a boss, and the top end of the first spring is sleeved on the boss.
4. A dynamic balance electric control valve according to claim 1, characterized in that the valve rod is arranged through the valve cover, a sealing cover threadedly connected to the valve cover is sleeved on the valve rod, a convex ring abutting against the valve cover is arranged on the outer circumferential wall of the sealing cover, a nut cover threadedly connected to the sealing cover is arranged at the connection between the sealing cover and the valve rod, an installation groove is arranged at the connection between the nut cover and the valve rod, a plurality of O-rings adapted to the valve rod are stacked in the installation groove, and a packing gland threadedly connected to the installation groove is arranged above the O-rings.
5. A dynamic balance electric control valve according to claim 4, characterized in that a second spring is arranged between the packing gland and the O-ring.
6. A dynamic balance electric control valve according to claim 5, characterized in that a sealing ring adapted to the valve rod is arranged inside the nut cover below the installation groove.
7. A dynamic balance electric control valve according to claim 6, characterized in that the bottom of the sealing cover is provided with a thrust ring that is threadedly connected to the sealing cover and abuts against the bottom end of the valve cover.
8. A dynamic balance electric regulating valve according to claim 1, characterized in that the top surface of the elastic sleeve is higher than the top surface of the filter cover.
9. A dynamic balance electric control valve according to claim 8, characterized in that the filter cover is connected to the valve core through threads.

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve

More Pneumatic Control Valve>>

More control valve>>

More valve>>

ZJHS Compact Pneumatic Diaphragm Angle Single-seated Control Valve