300PSI Resilient Wedge NRS Gate Valve - Flanged End
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Compliance Credentials: Strictly certified to UL 260 and FM standards for high-hazard critical infrastructure
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300PSI Resilient Wedge NRS Gate Valve - Flanged End
▏Product Description
Designed for indoor and outdoor fire inflow water, water supply, drainage, high-rising building firefighting, and industrial factory building fire protection systems, our 300PSI Resilient Wedge NRS Gate Valve-Flanged End delivers smooth, straight-through flow with zero foreign matter storage and a reliable self-sealing bonnet-to-body structure.
Following strict ASME B16.10 face-to-face dimensions, this non-rising stem valve features a high-strength ductile iron body, bonnet, and gland, a Ductile Iron + EPDM vulcanized wedge disc, and a heavy-duty Stainless Steel 304 stem, with a service life verified by a 5,000-cycle resilient seat test. Engineered with an NPT plug on the body and 2 operating nuts, it incorporates a multiple O-ring sealing structure to guarantee stable performance under a 300 PSI maximum working pressure (600 PSI test pressure) within a 0~80°C (32~176°F) temperature range, fully conforming to FM 1120 / 1130, UL 262, and ULC / ORD C262-92 criteria.
Available in precise sizes from 2" to 24" (with standard dimension layouts mapped for 2½" to 12"), its flanged ends seamlessly comply with ASME/ANSI B16.1 Class 125, B16.42 Class 150, BS EN 1092-2 PN16, and GB/T9113.1 standards. Ready for vertical indicator post or wall-type indicator installation, the valve holds full UL, cUL, FM, VDS, and CCC approvals, along with certified NSF/ANSI 61 & NSF/ANSI 372 lead-free compliance, making it the ultimate safe choice for global engineering procurement.
▏Technical Features
| Parameter Item | Technical Specification |
|---|---|
| Flange Standard | ASME/ANSI B16.1 Cl125, B16.42 Cl150, BS EN1092-2 PN16, GB/T9113.1 |
| Sizes | 2"(FM), 2.5"-12"(FM/UL), 14"-24" |
| Face to Face Standard | ASME B16.10 |
| Approvals | UL, cUL, FM, VDS, CCC, NSF/ANSI 61 & NSF/ANSI 372 |
| Maximum Pressure | 300 PSI (Working) / 600 PSI (Testing) |
| Pressure Compliance | Conforms to FM 1120/1130, UL 262, ULC/ORD C262-92 |
| Working Temperature | 0~80°C / 32~176°F |
| Coating & Body | Epoxy coating / NPT plug on body with 2 operating nuts |
▏Valve Material List
| NO. | Component Name | Material Specification |
|---|---|---|
| 1 | Flat Washer | Steel 1045 or Stainless Steel 304 |
| 2 | Inner Hexagon Screw | Steel 1045 or Stainless Steel 304 |
| 3 | Sealing Gland | EPDM |
| 4 | O-Ring | EPDM |
| 5 | Sealing Ring | EPDM |
| 6 | O-Ring | EPDM |
| 7 | Bonnet | Ductile Iron |
| 8 | Stem | Stainless Steel 304 |
| 9 | Disc | Ductile Iron + EPDM |
| 10 | Body | Ductile Iron |
| 11 | Sealing Ring | EPDM |
| 12 | Retaining Ring | C95400 |
| 13 | Gland | Ductile Iron |
| 14 | Terminal Pad | Ductile Iron |
| 15 | Link Block | Ductile Iron |
| 16 | Nut | Stainless Steel 304 or Steel 1045 |
| 17 | Studs | Stainless Steel 304 or Steel 1045 |
| 18 | Washer | Steel1045 |
| 19 | Inner Hexagon Screw | Steel1045 |
| 20 | Master Screw | C95400 |
| 21 | Plug | C95400 |
▏Dimensions
| Size (Inch) | DN (mm) | L (mm) | D (mm) | H (mm) |
|---|---|---|---|---|
| 2½" | 65 | 190 | 178 | 292 |
| 3" | 80 | 203 | 191 | 322 |
| 4" | 100 | 229 | 229 | 342 |
| 5" | 125 | 254 | 254 | 412 |
| 6" | 150 | 267 | 279 | 448 |
| 8" | 200 | 292 | 343 | 534 |
| 10" | 250 | 330 | 406 | 635 |
| 12" | 300 | 356 | 483 | 720 |
▏FAQ
📌 Which international fire protection certificates does this resilient wedge NRS gate valve hold?
A：This NRS flanged end gate valve is fully certified and compliant for global fire infrastructure tenders. It holds official UL Listed, cUL Listed, and FM Approved certifications. For strict potable water safety regulations, it features NSF/ANSI 61 & NSF/ANSI 372 lead-free certification. Additionally, it carries European VdS approval and Chinese CCC certification, making it fully qualified for high-standard municipal and commercial fire safety projects worldwide.
📌 What is the maximum hydrostatic testing and working pressure for this flanged gate valve?
A：Engineered for high-pressure system stability, the valve features a maximum working pressure of 300PSI (rated working pressure). To ensure zero-leak integrity under field surges, each valve undergoes standard factory testing with a maximum testing pressure of 600PSI (hydrostatic factory shell and seat test pressure). The pressure parameters fully conform to rigorous international standards, including FM 1120 / 1130, UL 262, and ULC / ORD C262-92.
📌 What materials are used for the main pressure-retaining components and seals of the valve?
A：The valve utilizes premium, heavy-duty industrial alloys and polymers to guarantee long-term operation:
Valve Body, Bonnet, Gland & Terminal Pad: Extruded from high-strength Ductile Iron for maximum structural durability.
Wedge Disc: Robust Ductile Iron + EPDM encapsulation, featuring a straight-through bottom design with no cavity traps to prevent debris accumulation.
Valve Stem: High-tensile Stainless Steel 304 to prevent corrosion binding.
Sealing Structure: Multiple EPDM O-rings and sealing rings protect the stem under high pressure during routine maintenance.
Retaining Ring, Master Screw & Plug: Machined from premium C95400 aluminum bronze alloy.
📌 What flange standards and piping sizes are available for system integration?
A：We supply a comprehensive sizing range from 2" up to 24" to accommodate various piping infrastructures. The flanged ends offer universal multi-standard compatibility, mating seamlessly with ASME/ANSI B16.1 Class 125, ASME/ANSI B16.42 Class 150, BS EN 1092-2 PN16, and GB/T9113.1 piping networks. The face-to-face dimensions strictly comply with the standard ASME B16.10 specification.
📌 Is this valve suitable for indoor/outdoor installations, and what indicators are supported?
A：Yes, this resilient gate valve is ideally engineered for both outdoor and indoor fire inflow water, water supply and drainage, potable water lines, high-rising building fire fighting networks, and industrial factory building protection systems. It operates within a working temperature range of 0~80°C (32~176°F) and features a high-grade fusion-bonded epoxy coating.
NRS Type (Non-Rising Stem Configuration): Configured with a premium NPT plug on the body and 2 heavy-duty operating nuts, making it fully compatible and ready for vertical indicator posts and wall-type indicator systems.
Available in comprehensive size configurations. This standard 300PSI Resilient Wedge NRS Gate Valve-Flanged End is currently InStock for immediate order processing. For wholesale B2B pricing (Price on Request) or custom bulk production bulk orders with a standard delivery lead time of 2 Months, please contact our export department directly. Technical data drawing verification will be provided within 24 hours.
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