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  • RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valve

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RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valve

RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valve

  • Model:RSH-15/RSH-20/RSH-25
  • Specification:DN15~25
  • Temperature:-20~65 ℃
  • Medium:Steam, high-temperature liquids, etc.
  • Pressure:0.3~10bar
  • Connection method:Threaded
  • Driving method:Pilot-operated type
  • Material:Brass, Stainless Steel SS304
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RSH Series Pilot-operated Diaphragm Type Steam Solenoid ValveOverview

The RSH-15/20/25 Series Threaded Connection 2-Way 2-Position Pilot-operated Diaphragm Type Steam Solenoid Valve is a high-sensitivity fluid control component explicitly tailored for small-bore industrial thermal pipe networks and high-frequency intermittent heat-exchange systems. In configurations like apparel steam ironing tables, small steam boiler auxiliaries, medical autoclave sterilization, and high-temperature liquid lines in chemical laboratories, the valve must execute highly frequent open-and-close cycles under medium-to-low pressures (below 10 bar), which demands exceptionally fast switching speeds, low pressure-differential actuation, and an extremely compact envelope.

This series features an advanced pilot-operated diaphragm configuration housed within a precision-cast, heavy-duty Brass or premium Stainless Steel (SS304) valve body. The underlying operation relies on releasing the fluid pressure in the upper diaphragm chamber when energized, leveraging the line's own differential pressure to lift the highly flexible reinforced diaphragm instantaneously, granting full-bore volumetric flow. Safely operating within a 0.3 - 10 bar pressure envelope, the RSH series demonstrates outstanding operational linearity and minimized actuation lag. Combined with globally standardized compact threaded interfaces, it stands as an economical yet high-performance process shut-off solution for space-limited automated thermal networks.

Product Image:RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valve

RSH Series Pilot-operated Diaphragm Type Steam Solenoid ValveCharacteristic

Pilot Diaphragm Mechanism for Low Differential Pressure Actuation: Hydraulically optimized for small-bore pipe runs from DN15 to DN25. A minor line pressure differential of just 0.3 bar is sufficient to guarantee that the primary seat snaps completely open. The pilot-diaphragm layout encounters significantly lower internal mechanical friction compared to piston types, which vastly accelerates response times and amplifies control sensitivity under pulse-jet steam profiles.

High-Precision Dual Metallurgical Bodies for Erosion Resistance: Offered in corrosion-resistant Brass or industrial-grade Stainless Steel (SS304) bodies to satisfy targeted budgets and fluid chemistries. The SS304 version exhibits exceptional defense against acidic condensate degradation and light cavitation scouring resulting from prolonged continuous steam flows.

High-Resilience Engineered Diaphragms for Sub-Zero Operations: The critical internal sealing barrier utilizes premium imported reinforced elastomer diaphragms (such as thermal-grade fabric-reinforced EPDM or structural PTFE composite diaphragms). These elements maintain stellar gas-tight isolation and long-term elastic stability within a temperature range of -20 - 65 C, refusing thermal hardening or fatigue-induced tearing.

Compact Threaded Form Factors Optimizing Envelope Space: Specifically tailored for highly integrated equipment setups, utilizing standardized G or NPT pipe threads. Compared to bulkier flanged valves, its physical dimensions and weight are dramatically scaled down, allowing direct suspended installation within crowded steam distribution manifolds.

Low-Power Energy Consumption and Anti-Stagnation Layout: The electromagnet core assembly is fine-tuned to deliver large magnetic tractive forces alongside exceptionally low operational thermal rise. When the pilot channel discharges, the diaphragm is pulled fully flat out of the flow path, leaving no sliding dead spaces where water scale or rust debris could bind moving components, effectively eliminating fluid leakage and process weeping.

RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valvestructure principle

Structure Diagram:RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valve

RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valvetechnology parameter

Working Voltage: AC220V 18VA, AC110V 22VA, AC24V 24VA, DC24/12V 20W, normally closed type equipped with D05-450 coil, normally open type equipped with D01-410 coil

RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valvestandard size

Outline Diagram:RSH Series Pilot-operated Diaphragm Type Steam Solenoid Valve

Outline Dimension Table   (Unit:mm)


Product ModelFlow Orifice (mm)L×W×H (A×B×C) Normally ClosedL×W×H (A×B×C) Normally OpenWeight (Kg) BrassWeight (Kg) Stainless Steel
RSH-151575 × 52 × 10875 × 52 × 12510.9
RSH-202087 × 58 × 11387 × 58 × 1301.21.1
RSH-2525107 × 70 × 123107 × 70 × 1401.71.6