Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

ZSY Solenoid-Controlled Pneumatic Steam Trap
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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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ZSY Solenoid-Controlled Pneumatic Steam Trap

Model：ZSY-300LB/ZSY-600LB/ZSY-900LB/ZSY-1500LB/ZSY-2500LB
Specification：DN20~100
Temperature：-29～350℃
Medium：Condensate, high-temperature and high-pressure steam, feedwater, and non-corrosive liquids

Pressure：300~2500LB
Connection method：Flange
Driving method：Pneumatic
Material：Cast Steel,Stainless Steel,Duplex Stainless Steel

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ZSY Solenoid-Controlled Pneumatic Steam TrapOverview

The ZSY electronically controlled pneumatic steam trap/drainage valve is an intelligent drainage unit integrating high-performance pneumatic actuation with electronic pilot control. It is specifically designed for high-pressure heater drainage, deaerator drainage, and condensate discharge in various thermal networks. By receiving electrical signals from DCS systems or level controllers, and utilizing solenoid valves or positioners, it converts pneumatic power into rapid mechanical displacement to move the plug. The ZSY series features specialized throttling and energy dissipation designs, effectively mitigating cavitation and flashing damage under high differential pressures. Combining electronic precision with pneumatic speed, this valve is widely used in high-temperature, high-pressure drainage systems across power, petrochemical, and paper industries.

Product Image of ZSY Solenoid-Controlled Pneumatic Steam Trap

ZSY Solenoid-Controlled Pneumatic Steam TrapCharacteristic

1.Rapid response and shut-off:Equipped with high-thrust pneumatic actuators and electronic pilot control, the valve completes opening or closing within seconds after receiving a command. This sensitivity ensures real-time level control, preventing water hammer damage to turbines or heat exchangers.
2.Multi-stage throttling for energy dissipation:Internals utilize maze-type or multi-hole throttling structures to release pressure step-by-step. This design fundamentally suppresses cavitation and flashing, reduces noise levels, and significantly extends the life of sealing surfaces.
3.Superior sealing and erosion resistance:The plug and seat sealing surfaces are fully hard-faced with Stellite cobalt-based alloy for extreme hardness. Combined with a single-seat structure, it ensures zero leakage in the closed position, minimizing energy loss in thermal systems.
4.Intrinsic safety and fail-safe protection:Driven by compressed air, the valve is naturally explosion-proof. Built-in heavy-duty springs allow for fail-close or fail-open logic, ensuring the system automatically returns to a safe position during power or air supply failure.
5.Integrated intelligent control logic:Supports 4-20mA regulation and real-time feedback when equipped with smart positioners and limit switches. This facilitates remote monitoring and precise logic interlocking within modern Industrial IoT environments.
6.Durable pressure-resistant housing:Bodies are made of premium cast steel or alloy steel, meeting strict high-pressure standards. Flanged or welded connections ensure structural integrity under frequent high-temperature cycles.
7.Precision guiding and stability:Utilizes cage-guided or long-stroke top-guided structures to ensure excellent concentricity. This eliminates vibrations caused by lateral fluid forces and maintains stability during regulation.
8.Modular rapid maintenance:Scientific connection between actuator and body, combined with modular internals, allows for vertical extraction of components from the top without removing the valve from the line, reducing O&M costs.

ZSY Solenoid-Controlled Pneumatic Steam Trapstructure principle

Structural Drawing of ZSY Solenoid-Controlled Pneumatic Steam Trap

List of Component Names and Materials

Part Name	Material 1	Material 2	Material 3
Body	25+Slite21	12Cr1MoV+Slite21	0Cr17Ni12Mo2+Slite21
Disc	25+Slite21	12Cr1MoV+Slite21	Slite21
Stem	1Cr13	25Cr2Mo1V	0Cr17Ni4Cu4Nb
Stuffing Box	25	12Cr1MoV	0Cr17Ni12Mo2
Gland Flange	1Cr13	1Cr13	0Cr17Ni12Mo2
Packing	Flexible graphite braided with SS wire	Flexible graphite braided with SS wire	Flexible graphite braided with SS wire
Packing Seat	1Cr13	1Cr13	0Cr17Ni12Mo2
Gasket	High-mesh flexible graphite with 316 wire	High-mesh flexible graphite with 316 wire	High-mesh flexible graphite with 316 wire

ZSY Solenoid-Controlled Pneumatic Steam Traptechnology parameter

Performance Specification Sheet

Performance Specification Sheet
Nominal Pressure	300	600	900	1500	2500	LB
Strength test pressure	450	900	1350	2250	3750
Sealing test pressure	330	660	990	1650	2750
Applicable Temperature	-29～350					℃

ZSY Solenoid-Controlled Pneumatic Steam Trapstandard size

Standard requirements for external dimensions

Butt-Welding (BW) End dimensions shall comply with ANSI B16.25.

Socket-Welding (SW) dimensions shall comply with ANSI B16.34.

Socket-Welding (SW) size range: 1/2″ – 2-1/2″.

Butt-Welding (BW) size range: 1/2″ – 4″.

Testing and Inspection Standard: JB/T 3595.

Outline Drawing of ZSY Solenoid-Controlled Pneumatic Steam Trap

Outline dimension table（Unit：mm）

Nominal Diameter	300, 600, 900, 1690LB (Equivalent to P55 100)						2680LB (Equivalent to P55 170)
	L	L1	D	W	H	G(kg)	L	L1	D	W	H	G(kg)
1/2"	152	102	58	216	442	27.8	152	102	58	216	386	27.8
3/4"	152	102	58	216	442	27.8	152	102	58	216	386	27.8
1"	152	102	58	216	442	27.8	152	102	58	216	386	27.8
1-1/4"	170	122	81	363	554	46.8	170	122	81	216	469	46.8
1-1/2"	170	122	81	363	554	46.8	170	122	81	216	469	46.8
2"	208	155	92	363	600	85	272	180	102	363	622	85
2-1/2"	272	180	102	406	648	85	325	224	122	406	658	85
3"	272	180	102	406	648	85	325	224	122	406	658	85
4"	325	224	122	406	658	102	325	224	122	406	658	112

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

ZSY Solenoid-Controlled Pneumatic Steam Trap

More Pneumatic Control Valve>>

More control valve>>

More valve>>

ZSY Solenoid-Controlled Pneumatic Steam Trap