Technical Overview & Engineering Specifications
The DIN 3352 F4 Resilient Seated Gate Valve (Short Body) Engineering Specification 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 |
|---|---|---|
| Manufacturing Standard | DIN 3352 Teil 4 / EN 1171 / EN 1074-1 & 2 | CE-PED and WRAS certified |
| Face-to-Face Dimensions | EN 558 Series 14 (Short pattern DIN F4) | Compact space-saving envelope |
| Nominal Pressure | PN10 / PN16 (1.6 MPa) / PN25 (2.5 MPa) | Hydrostatic shell test at 1.5x PN, seat at 1.1x PN |
| Body & Wedge Metallurgy | Ductile Iron QT450-10, EPDM fully vulcanized wedge | Tensile strength ≥ 450 MPa, elongation ≥ 10% |
| Coating & Verification | AkzoNobel Resicoat FBE ≥ 250 mm / 3000 V spark tested | 100% Rate A zero bubble-tight leakage |
Compact Body Geometry for Modern Pipeline Chambers
The DIN 3352 F4 gate valve utilizes EN 558 Series 14 face-to-face dimensions, making it the preferred standard in European and international water distribution systems where valve chamber space is limited. The lightweight body reduces installation fatigue without sacrificing structural rigidity.
Full-Port Hydraulic Flow with Zero Pocket Cavity
Unlike legacy cast iron gate valves, the bottom of the Baoming F4 valve body has no recess to collect silt or gravel. When fully open, the valve provides an unobstructed cylindrical waterway identical to pipe internal diameter, resulting in minimal pressure loss.
Triple O-Ring Maintenance-Free Stem Seal
The upper stem incorporates three independent EPDM O-rings housed in a bronze bearing bushing, eliminating traditional stuffing box maintenance and allowing seal replacement under full line pressure.
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