Technical Overview & Engineering Specifications
The Model 500X Pressure Relief & Sustaining Valve Engineering Datasheet is an authoritative engineering and procurement specification published by Quanzhou Baoming Hardware Products Co., Ltd. (Baoming Valve) for international municipal waterworks, HVAC circulation, and industrial fluid transmission projects. Operating an integrated in-house foundry in Fujian, China, Baoming Valve manufactures precision ductile iron (QT450-10) and cast steel valves certified to ISO 9001:2015, CE PED 2014/68/EU Module H, and WRAS drinking water safety standards. Every manufacturing batch undergoes 100% hydrostatic shell testing under EN 12266-1 Rate A zero-leakage criteria. Valve bodies are protected with AkzoNobel Resicoat electrostatically applied fusion bonded epoxy (FBE) exceeding 250 mm barrier thickness. Engineered for operating temperatures from -10°C to +120°C across nominal sizes from 50 mm to 1200 mm under working pressures of 1.6 MPa and 2.5 MPa. Baoming Valve provides complete EN 10204 3.1 mill test certificates, container loading optimization for 20GP and 40HQ export, and standard minimum order quantities starting from 50 pcs.
Verified Engineering Matrix & Standards
| Specification Parameter | Standard Engineering Value | Baoming Quality Guarantee |
|---|---|---|
| Dual Functional Modes | Mode A: Pressure Relief (rapid open) / Mode B: Pressure Sustaining | Fast-response surge relief & zone protection |
| Relief Response Speed | Opens immediately when system pressure exceeds setpoint by 0.02 MPa | Dissipates transient shockwaves to atmosphere |
| Pressure Ratings | PN16 (1.6 MPa) / PN25 (2.5 MPa) with pilot range 0.2 to 2.0 MPa | Calibrated adjustable stainless pilot spring |
| Size Spectrum | DN50 to DN600 (50 mm to 600 mm) | High-capacity discharge body geometry |
| Testing Standard | 100% individual pressure bench testing per EN 12266-1 | Zero droplet leakage Rate A certified |
Function 1: Rapid Surge Pressure Relief
Installed on a tee-junction off the main transmission line, the Model 500X acts as an automatic safety relief valve. When unexpected pressure surges occur from valve closure or pump trip, the valve snaps open instantly to vent excess pressure to a reservoir or drain, then closes smoothly.
Function 2: Upstream Pressure Sustaining
When installed in-line on a distribution main, the Model 500X ensures that upstream pressure never drops below a predetermined minimum threshold, guaranteeing essential supply to high-elevation zones before permitting flow to lower areas.
Tamper-Proof Stainless Pilot Adjuster
The high-precision pilot features a lockable adjustment screw that prevents unauthorized changes to pressure setpoints once commissioned on site.
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