300PSI Resilient Wedge OS & Y Gate Valve - Grooved End Z81-300
Prepared by: Fire Gate Valve Technical Department
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Ningjin APC Industries is a premier UL & FM certified manufacturer in China, delivering high-performance industrial and fire protection valves built to strict international safety standards.
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300PSI Resilient Wedge OS & Y Gate Valve - Grooved End Z81-300
▏Product Description
Our 300PSI Resilient Wedge OS&Y Gate Valve Model Z81-300 with grooved ends is a fully certified fire protection valve engineered to pass North American fire project bidding and inspection.
Listed with UL, cUL, FM, NSF/ANSI 61 & NSF/ANSI 372, it complies with FM 1120/1130, UL 262, and ULC / ORD C262-92 pressure standards. Sizes range from 2" (FM only) to 2.5"-12" (FM & UL), rated at 300PSI working pressure and 600PSI test pressure within 0-80°C (32-176°F) working temperature. Groove ends follow Metric or ANSI/AWWA C606, face-to-face dimensions meet ASME B16.10, equipped with body NPT plug and two operating nuts. Standard epoxy coating, NSF certified lead-free version available.
All structural components adopt standardized ASTM grade materials: ASTM A536 ductile iron body, EPDM resilient wedge for zero leakage, SS304 or Steel 1045 fasteners, and C95400 bronze components.
The grooved end design allows fast mechanical joining, reducing field labor time and providing flexible piping connections for modern fire protection grids.
▏Technical Features
| Parameter Item | Parameter |
| Groove Standard | Metric or ANSI / AWWA C606 |
| Face to Face Standard | ASME B16.10 |
| Sizes | 2" (FM), 2.5", 3", 4", 5", 6", 8", 10", 12" (FM & UL) |
| Approvals | UL, cUL, FM, NSF / ANSI 61 & NSF / ANSI 372 |
| Maximum Working Pressure | 300PSI |
| Maximum Testing Pressure | 600PSI |
| Pressure Compliance Standard | FM 1120 / 1130, UL 262, ULC / ORD C262-92 |
| Working Temperature Range | 0-80°C / 32-176°F |
| Coating Details | Epoxy or Coating upon request |
| Body Structure Details | NPT plug on body with 2 operating nuts |
| Lead-free Certification | Certified lead-free by NSF / ANSI 61 & NSF / ANSI 372 is available |
▏Valve Material List
| NO. | Name | Material | Standard |
|---|---|---|---|
| 1 | Gasket | Stainless Steel 304 or C95400 | ASTM A276 or ASTM B148 |
| 2 | Bonnet | Ductile Iron | ASTM A536 Grade 65-45-12 |
| 3 | Packing | Graphite | |
| 4 | Disc | Ductile Iron +EPDM | ASTM A536 Grade 65-45-12+ASTM D2000 |
| 5 | Body | Ductile Iron | ASTM A536 Grade 65-45-12 |
| 6 | Sealing Ring | EPDM | ASTM D2000 |
| 7 | Bolt | Stainless Steel 304 or Steel 1045 | Bolt / Stainless Steel 304 / ASTM A276 or 1045, ASTM A29 |
| 8 | Gland | Ductile Iron | ASTM A536 Grade 65-45-12 |
| 9 | Nut | Stainless Steel 304 or Steel 1045 | Nut / Stainless Steel 304 / ASTM A276 or 1045, ASTM A29 |
| 10 | Flat Washer | Stainless Steel 304 or Steel 1045 | Flat Washer / Stainless Steel 304 / ASTM A276 or 1045, ASTM A29 |
| 11 | Bolt | Stainless Steel 304 or Steel 1045 | Bolt / Stainless Steel 304 / ASTM A276 or 1045, ASTM A29 |
| 12 | Handwheel | Ductile Iron | ASTM A536 Grade 65-45-12 |
| 13 | Lock Nut | C95400 | ASTM B148 |
| 14 | Locating Screw | Stainless Steel 304 or Steel 1045 | Stainless Steel 304 / ASTM A276 or 1045, ASTM A29 |
| 15 | Stem | Stainless Steel 304 or C95400 | ASTM B148 |
| 16 | Stem Nut | C95400 | ASTM B148 |
| 17 | Plug | C95400 | ASTM B148 |
| 18 | Lifting Nut | CF8/CF8M or C95400 | CF8/CF8M or C95400 / ASTM A351 or ASTM B148 |
| 19 | Pin | Stainless Steel 304 | ASTM A276 |
| 20 | Sealing Ring | EPDM | ASTM D2000 |
▏Dimensions
| Size | DN | L | F | D | E | G | H |
|---|---|---|---|---|---|---|---|
| 2½" | 65 | 190 | 15.9 | 73 | 69.1 | 7.9 | 370 |
| 76.1 | 72.3 | ||||||
| 3" | 80 | 203 | 15.9 | 88.9 | 84.9 | 7.9 | 420 |
| 4" | 100 | 229 | 15.9 | 114.3 | 110.1 | 9.5 | 447 |
| 5" | 125 | 254 | 15.9 | 139.7 | 135.5 | 9.5 | 547 |
| 141.3 | 137 | ||||||
| 6" | 150 | 267 | 15.9 | 165.1 | 160.8 | 9.5 | 607 |
| 168.3 | 163.9 | ||||||
| 8" | 200 | 292 | 19 | 216.3 | 211.6 | 11.1 | 754 |
| 219.1 | 214.3 | ||||||
| 10" | 250 | 330 | 19 | 273 | 268.3 | 12.7 | 890 |
| 12" | 300 | 356 | 19 | 323.9 | 318.3 | 12.7 | 1031 |
📌 Does your Model Z81-300 series support grooved fire piping systems, and will it pass North American project bidding?
Yes, absolutely. Our Model Z81-300 OS&Y gate valve with grooved ends is specifically engineered to pass North American fire project bidding and strict engineering inspections.
- — Grooved Connection Advantage: Standardized roll-grooved design allows quick mechanical assembly without welding or threading.
- — Labor-Saving: Helps contractors significantly cut installation time and field labor costs during project execution.
- — Pressure Rating: Rated at a steady 300PSI working pressure for high-pressure fire protection grids.
📌 What pressure compliance standards does the Z81-300 valve meet, and what is its maximum testing pressure?
Our Z81-300 series is a heavy-duty 300PSI resilient wedge gate valve FM 1120/1130, UL 262, and ULC/ORD C262-92 compliant product built for critical safety:
- — Pressure Performance: Rated at 300PSI working pressure and hydrostatically tested under a 600PSI test pressure.
- — Temperature Range: Operates perfectly within a working temperature range of 0-80°C (32-176°F).
- — Field Convenience: Features a built-in NPT plug and two operating nuts for smooth hydrostatic field testing.
📌 What grade of materials are used for the valve body and sealing components to ensure zero leakage?
All structural components adopt premium standardized ASTM grade materials to ensure a high-quality ASTM A536 ductile iron gate valve EPDM wedge construction:
| Component | Material Standard |
|---|---|
| Body & Bonnet | ASTM A536 Grade 65-45-12 Ductile Iron |
| Resilient Wedge | Ductile Iron + EPDM (ASTM D2000) for Zero Leakage |
| Stem & Core Components | Bronze C95400 / Stainless Steel 304 |
| Fasteners | Stainless Steel SS304 or Steel 1045 |
📌 Can this 300PSI gate valve be used in fire piping systems that require drinking water safety certifications?
Yes, we provide specialized compliance versions. While our standard configuration features a high-durability fusion-bonded protective epoxy coating, we also offer a potable-water configuration:
- — Lead-Free Configuration: It is fully available as an NSF/ANSI 61 & 372 certified lead free fire valve, strictly adhering to global health standards where fire and drinking water grids intersect.
📌 What are the available sizes for this 300PSI valve, and do the dimensions comply with ASME standards?
The Z81-300 series covers a versatile range from 2" to 12", strictly adhering to ASME B16.10 face to face dimensions 2 to 12 inch standards:
- — Size Approvals: 2" size is FM approved; sizes from 2.5" to 12" carry dual FM & UL listings.
- — 4" (DN100): Face-to-face length (L) of 229mm; groove outer diameter (D) of 114.3mm.
- — 6" (DN150): L dimension of 267mm; groove outer diameter options of 165.1mm or 168.3mm.
- — 12" (DN300): L dimension of 356mm; fully extended overall height (H) of 1031mm.
*Detailed technical drawings and complete material data sheets are available to help streamline your engineering layouts.
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Prepared by: Fire Gate Valve Technical Department
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