Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

ZJM Electric Multi-stage Pressure-reducing Cage Guided 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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ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valve

Model：ZJM-16C/ZJM-25C/ZJM-40C/ZJM-64C/ZJM-16P/ZJM-25P/ZJM-40P/ZJM-64P/ZJM-16R/ZJM-25R/ZJM-40R/ZJM-64R
Specification：DN20-DN300
Temperature：-40-450℃
Medium：Superheated steam, high-pressure water, easily vaporized media, non-viscous fluids

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

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ZJM Electric Multi-stage Pressure-reducing Cage Guided Control ValveOverview

ZJM electric multi-stage pressure reducing cage control valve is a high-performance control unit specifically designed for harsh industrial conditions involving high pressure differentials, high flow velocities, and cavitation risks. The valve combines a high-precision electric actuator with a multi-stage throttling cage structure. By receiving 4-20mA DC or other standard control signals, the actuator drives the valve stem to adjust the position of the multi-stage cage plug. Its core principle lies in dissipating fluid kinetic energy through multiple stages of pressure reduction, effectively controlling the flow velocity at each stage. This prevents the occurrence of cavitation and flashing while significantly reducing aerodynamic and hydrodynamic noise. The ZJM series is an ideal choice for feed water bypass, steam drainage, and other high-pressure drop regulation systems in power plants, oil and gas, and chemical sectors.

Product Image of ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valve

ZJM Electric Multi-stage Pressure-reducing Cage Guided Control ValveCharacteristic

1. Multi-stage throttling for energy dissipation:Utilizes multiple concentric cages or specialized multi-stage plug designs to reduce pressure in steps. This effectively lowers the flow velocity at each throttling stage, fundamentally eliminating cavitation damage and extending the service life of internal components under extreme pressure drops.
2.Superior noise reduction performance:The multi-stage pressure drop distribution avoids the sharp noise generated by single-stage high-velocity expansion. Compared to standard cage valves, it can reduce noise levels by 15 to 30 decibels, meeting strict industrial environmental standards.
3.Highly integrated intelligent drive:Equipped with an intelligent electronic electric actuator featuring built-in servo control. It supports non-intrusive calibration, fault diagnosis, and real-time position feedback, ensuring high precision and stability in the control loop.
4.Pressure-balanced design for low torque:The plug features a pressure-balanced structure with balance holes to offset high unbalanced forces from the medium. This allows for smaller actuator sizing even under ultra-high pressure conditions, improving the agility and accuracy of regulation.
5.Excellent erosion and wear resistance:Critical internal components like the cages and plugs are made of high-strength stainless steel or alloy steel, often reinforced with hardening treatments or Stellite hard-facing. This ensures reliable operation in high-speed, abrasive fluid environments.
6.Stable cage-guided structure:The large-area side-guiding design of the cage ensures precise axial alignment of the plug throughout its full stroke, effectively suppressing mechanical vibration and ensuring long-term stable performance under high loads.
7.Fail-safe logic and protection:The actuator includes built-in torque protection, thermal sensors, and stroke limit switches. It supports programmable fail-safe positions (such as fail-in-place, full open, or full close) upon control signal loss.
8.Modular design for easy service:Features a top-entry structure that allows the extraction of the actuator, bonnet, and internal cages as modules without removing the valve body from the pipeline, significantly reducing maintenance downtime and costs.

ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valvestructure principle

Structural Drawing of ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valve

List of Component Names and Materials

Name	Material
Valve body	Cast Steel,Stainless Steel,Duplex Stainless Steel
Valve cover	HT200, ZG230-450, ZG1Cr18Ni9Ti
Valve core	1Cr18Ni9Ti, Stellite alloy surfacing, reinforced PTFE
Packing	PTFE, flexible graphite, stainless steel bellows
Push rod, Bushing	2Cr13
Gasket	Rubber asbestos board, 1Cr18Ni9Ti, graphite spiral wound gasket

ZJM Electric Multi-stage Pressure-reducing Cage Guided 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	-40-450				℃

ZJM Electric Multi-stage Pressure-reducing Cage Guided 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 ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valve

Outline dimension table(Unit: mm)

Nominal Diameter(DN)				20		25		32		40	50	65	80		100		125	150	200	250		300
Flange Distance(L)	PN16		185		200		205		222	250	276	298		350		410	451	600	670		735
	PN40		190		205		210		230	255	285	310		355		425	460	615	685		750
	PN64		200		210		220		251	286	311	337		394		440	475	630	700		765
Room temperature valve coverH1	PN16		756		781		803		928	945	1260	1270		1294		1515	1540	1565	1816		2180
	PN40		766		791		813		938	955	1260	1270		1329		1545	1560	1605	1892		2130
	PN64		773		803		833		965	1000	1280	1300		1338		1575	1620	1675	1936		2202
Medium Temp Type Bonnet H1	PN16		956		981		1003		1128	1145	1510	1520		1544		1835	1860	1885	2166		2530
	PN40		966		991		1013		1138	1155	1510	1520		1579		1865	1880	1925	2245		2480
	PN64		973		1003		1033		1165	1200	1530	1550		1588		1895	1940	1995	2286		2552
Ф D			225									257							310
H2	PN16	53		58		68		73		80	90	98	108		123		140	168	203	230
	PN40	53		58		68		73		80	90	98	115		135		150	188	223	255
	PN64	63		68		75		83		88	100	105	125		148		170	203	235	265
H3			87						90
Flange Standard			GB：1.6、2.5、4.06.4Mpa ANSI：150、300、600Lb JIS：10K、20K、30K

*The performance indicators of this product comply with GB/T4213-92

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

ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valve

More Electric Control Valve>>

More control valve>>

More valve>>

ZJM Electric Multi-stage Pressure-reducing Cage Guided Control Valve