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  • RSQ Pilot Operated Anti-Water Hammer Solenoid Valve

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RSQ Pilot Operated Anti-Water Hammer Solenoid Valve

RSQ Pilot Operated Anti-Water Hammer Solenoid Valve

  • Model:RSQ-15/RSQ-20/RSQ-25/RSQ-32/RSQ-40/RSQ-50
  • Specification:DN15~50
  • Temperature:-20~65 ℃
  • Medium:Industrial water, low-viscosity liquids, neutral gases, compressed air, and light oil (≤20cst)
  • Pressure:0.3~16bar
  • Connection method:G parallel pipe thread (ISO 228-1), NPT American tapered pipe thread (ANSI B1.20.1)
  • Driving method:Pilot Operated
  • Material:High-density forged Brass, Premium corrosion-resistant Stainless Steel SS316
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RSQ Pilot Operated Anti-Water Hammer Solenoid ValveOverview


The RSQ Series Pilot-Operated Anti-Water Hammer Solenoid Valve is an industrial-grade control valve engineered and optimized for automated fluid systems requiring high pressure, medium-to-large flow management, and effective elimination of fluid shockwaves. Covering a size spectrum from DN15 to DN50, this series incorporates a specialized cushioned pilot flow channel design. During valve opening and closing strokes, it extends the transient shut-off duration and smoothens the fluid momentum variations within the pipeline, thereby fundamentally suppressing and eliminating water hammer (fluid shock waves). This mechanism safeguards expensive downstream infrastructure such as pipelines, instrumentation, water pumps, and filtration systems from abrupt overpressure failure.

The valve delivers exceptional performance within a wide and reliable operational pressure range of 0.3 to 16 bar. The compact geometry and precision fluid-dynamics optimization ensure both high pressure-bearing capability and low fluid resistance coupled with high flow capacity. To withstand diverse industrial environments, the valve body is available in two core material choices: premium forged Brass or high-grade anti-corrosive SS316 Stainless Steel. Fully complying with high-precision G and NPT thread standards, it facilitates seamless adaptation and quick installation within international piping systems. It is highly suitable for building water supply/drainage, industrial water circulation, and automated integrated fluid machinery where pipeline vibration and noise must be strictly controlled.


Product Image:RSQ Pilot Operated Anti-Water Hammer Solenoid Valve

RSQ Pilot Operated Anti-Water Hammer Solenoid ValveCharacteristic


Outstanding Anti-Water Hammer Cushioned Design: The internal pilot control loops and throttle orifices are calibrated with meticulous geometric precision. By utilizing the fluid's own pressure to achieve a progressive, gradual closing profile, the valve securely dissipates instantaneous fluid kinetic energy, successfully preventing pipeline shaking, pipe bursts, and operational resonance noise.

Superior High-Pressure Wide-Range Performance: The internal pilot flow paths and reinforced flexible composite diaphragm structure are engineered with a strict mechanical balance layout, offering a robust pressure-bearing capability up to 16 bar. Even at an ultra-low starting pressure differential of just 0.3 bar, the valve ensures crisp, thorough open/close cycling, eliminating the sluggish operation and incomplete closure found in conventional low-pressure pilot valves.

Premium Materials for Varied Operating Conditions: Forged Brass variants offer remarkable cost-performance and machining accuracy for general industrial fluid control. The SS316 Stainless Steel models are custom-engineered for highly aggressive, chemical, or ultra-clean environments, providing exceptional resistance against localized pitting and general corrosive attack.

Compact Footprint & Multiple Thread Standards: Tailored for DN15 to DN50 small-to-medium pipelines with a highly compact profile that drastically minimizes the required installation space. Full compliance with internationally accepted G and NPT thread standards ensures an instantaneous, hassle-free match with domestic and global automated piping layouts.

All-Weather Freeze Resilience & Long Service Life: Engineered with a wide operational envelope spanning from -20 to 65 ℃, the specialized elastomeric seals and robust valve body resist hardening, crystallization, and cracking under freezing winter outdoor environments or overnight sudden temperature drops, ensuring long-term leak-proof structural integrity.

RSQ Pilot Operated Anti-Water Hammer Solenoid Valvestructure principle

Structure Diagram:YSZ Normally Closed Bistable Latching Pulse Solenoid Valve

RSQ Pilot Operated Anti-Water Hammer Solenoid Valvetechnology parameter

Specification Sheet

Product ModelOrifice SizePort ThreadCv ValueWorking Pressure (bar)Working Pressure (bar)Working Pressure (bar)
(mm)AC220V/DC24VAC220V/DC24VAC24V/DC12V
GasLiquid, WaterGas, Liquid, Water
RSQ-1513.51/2 "3.50.3 ~ 160.3 ~ 120.3 ~ 8
RSQ-20183/4 "7.60.3 ~ 160.3 ~ 120.3 ~ 8
RSQ-25241 "120.3 ~ 160.3 ~ 120.3 ~ 8
RSQ-32311¹/₄ "200.3 ~ 120.3 ~ 100.3 ~ 8
RSQ-40391¹/₂ "280.3 ~ 120.3 ~ 100.3 ~ 8
RSQ-5048.52 "460.3 ~ 120.3 ~ 100.3 ~ 8


RSQ Pilot Operated Anti-Water Hammer Solenoid Valvestandard size

Outline Diagram:YSZ Normally Closed Bistable Latching Pulse Solenoid Valve

Outline Dimension Table   (Unit:mm)

Product ModelOrifice SizePort ThreadDimensionsWeight (Kg)Weight (Kg)
(mm)A×B×C×DBrassStainless Steel
RSQ-1513.51/2 "66 × 42 × 82 × 690.50.45
RSQ-20183/4 "79 × 51 × 89 × 730.60.55
RSQ-25241 "105 × 71 × 106 × 851.21.1
RSQ-32311¹/₄ "130 × 85 × 117 × 891.71.5
RSQ-40391¹/₂ "140 × 96 × 127 × 952.32.1
RSQ-5048.52 "175 × 125 × 143 × 1054.33.9


Due to the rapid R&D iteration speed of valve products from China kaiweixi Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!