300PSI Resilient Wedge OS & Y Gate Valve - Flanged End

Model: Z81-300

Categories:

Gate Valve

Compliance Credentials: Strictly certified to UL 260 and FM standards for high-hazard critical infrastructure

Resilient Wedge os&Y Gate valve-Grooved End

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300PSI Resilient Wedge OS & Y Gate Valve - Flanged End

丨Technical Features

This resilient wedge OS&Y grooved gate valve complies with ANSI/AWWA, ASME, BS EN and GB standards, fully certified by FM, UL, CUL and NSF 61/372 for lead-free safety, meeting global engineering and water system requirements. It features premium ductile iron, 304 stainless steel and EPDM sealing materials, ensuring durable, leakproof performance. Rated for 300PSI working pressure and 0°C-80°C operating temperature, it covers sizes from 2” to 12”. Custom coatings and standard NPT plug & operating nuts deliver versatile, reliable solutions for worldwide industrial and plumbing projects.

丨Technical Specifications

Parameter Item	Parameter Value
Design Standard	ANSI/AWWA C515
Flange Standard	ASME/ANSI B 16.1 Class 125; ASME/ANSI B 16.42 Class 150; BS EN 1092-2 PN 16; GB / T9113.1
Groove Standard	ANSI / AWWA C606 or Metric
Face to Face Standard	ASME B16.10
Sizes	2"(FM); 2.5", 3", 4", 5", 6", 8", 10", 12" (FM UL)
Approvals	FM, UL, CUL, NSF / ANSI 61 & NSF / ANSI 372
Maximum Working Pressure	300PSI
Maximum Testing Pressure	600 PSI
Pressure Compliance Standard	Pressure conforms to 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 Configuration	NPT plug on body with 2 operating nuts
Lead-Free Certification	Certified lead-free by NSF / ANSI 61 & NSF / ANSI 372 is available

Resilient Wedge os&Y Gate valve-Grooved End Z81-300A

丨Valve Material List

NO.	Name	Material	Standard
1	Gasket	Stainless Steel 304	ASTM A276 / C95400, 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	ASTM A276 / ASTM A29
8	Gland	Ductile Iron	ASTM A536 Grade 65-45-12
9	Nut	Stainless Steel 304 or Steel 1045	ASTM A276 / ASTM A29
10	Flat Washer	Stainless Steel 304 or Steel 1045	ASTM A276 / ASTM A29
11	Bolt	Stainless Steel 304 or Steel 1045	ASTM A276 / 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	ASTM A276 / ASTM A29
15	Stem	Stainless Steel 304 or C95400	ASTM A276 / ASTM B148
16	Stem Nut	C95400	ASTM B148
17	Plug	C95400	ASTM B148
18	Lifting Nut	CF8 or C95400	ASTM A351/ ASTM B148
19	Pin	Stainless Steel 304	ASTM A276
20	Sealing Ring	EPDM	ASTM D2000

丨Dimensions (Z81-300A)

Size	DN	L	F	D	F	G	H
2½”	65	190	15.9	73 / 76.1	69.1 / 72.3	7.9	370
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 / 141.3	135.5 / 137	9.5	547
6”	150	267	15.9	165.1 / 168.3	160.8 / 163.9	9.5	607
8"	200	292	19	216.3 / 219.1	211.6 / 214.3	11.1	754
10”	250	330	19	273	268.3	127	890
12”	300	356	19	323.9	318.3	12.7	1031

丨300PSI OS&Y Grooved End Gate Valve FAQ

Q1: Does your resilient wedge OS&Y grooved gate valve meet North American fire protection and lead-free safety regulations?

A: Yes. The certified resilient wedge OS&Y grooved gate valve complies fully with FM, UL, and cUL standards for fire protection systems. It also carries NSF/ANSI 61 and NSF/ANSI 372 certifications, meeting lead-free compliance standards for drinking water and water supply projects worldwide.

Q2: Can this 300PSI OS&Y Grooved End Gate Valve withstand high-pressure plumbing setups without leaking over time?

A: Yes. The 300PSI OS&Y Grooved End Gate Valve is built with a heavy-duty ductile iron body (ASTM A536 Grade 65-45-12) and an EPDM-encapsulated disc (ASTM D2000). It is specifically rated for a maximum working pressure of 300 PSI and has been hydrostatically factory-tested up to 600 PSI to ensure long-term sealing under pressure spikes.

Q3: Are the connection ends of the resilient wedge OS&Y grooved gate valve compatible with regional piping standards across different global projects?

A: Yes. For grooved pipeline configurations, the groove ends of our resilient wedge OS&Y grooved gate valve comply with ANSI/AWWA C606 or Metric specifications. For flanged connections, options are available to match ASME/ANSI B16.1 Class 125, ASME/ANSI B16.42 Class 150, BS EN 1092-2 PN16, and GB/T9113.1 standards.

Q4: What materials are used for the stem and internal seals of this 300PSI OS&Y Grooved End Gate Valve to prevent corrosion?

A: The gate valve stem is made of Stainless Steel 304 or Aluminum Bronze (ASTM A276 / ASTM B148) to resist binding and rusting. Seals are molded from premium EPDM rubber (ASTM D2000). To ensure maximum longevity, the ductile iron body and bonnet of this 300PSI OS&Y Grooved End Gate Valve are finished with a high-grade fusion-bonded epoxy coating to prevent internal and external oxidation.

Q5: What sizes are available for this series, and do all sizes of the resilient wedge OS&Y grooved gate valve carry full international engineering approvals?

A: The series ranges from 2” to 12” (DN65 to DN300). The 2” size resilient wedge OS&Y grooved gate valve is FM approved, while the 2.5”, 3”, 4”, 5”, 6”, 8”, 10”, and 12” sizes carry combined FM and UL approvals, meeting standard project submittal requirements.

Q6: Is Ningjin APC Industries (Meihua Industries) a verified manufacturer for projects requiring UL-listed and FM-approved 300PSI OS&Y Grooved End Gate Valves?

A: Yes. Ningjin APC Industries is a long-standing manufacturer with active listings searchable in the official UL Product iQ and FM Approvals databases. As one of the early domestic manufacturers in China to secure these dual certifications for the 300PSI OS&Y Grooved End Gate Valve, the company provides certified products that match the performance standards of Western brands, but with shorter lead times and lower procurement costs due to direct regional manufacturing.

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