UL/FM 200PSI Resilient Wedge OS&Y Gate Valve - Flanged End Z41

Date Updated: July 17, 2026
Prepared by: Fire Gate Valve Technical Department

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Gate Valve

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

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UL/FM 200PSI Resilient Wedge OS&Y Gate Valve - Flanged End Z41

▏Product Description

Engineered by Ningjin APC Industries, the Model Z41 Resilient Wedge OS&Y Gate Valve is a flanged-end isolation valve fully conforming to ANSI / AWWA C515. Carrying premium FM Approval, UL, and CUL Listings, alongside lead-free certification under NSF / ANSI 61 & 372, this valve is built for rigid bidding approvals in fire protection and potable water networks.

It operates reliably under a maximum working pressure of 200 PSI (hydrostatically tested to 400 PSI in absolute accordance with FM 1120/1130 and UL 262) within a temperature range of 0~80°C (32~176°F). Featuring a straight-through, smooth-bottom ductile iron body (ASTM A536 65-45-12) encapsulated in EPDM, a pre-grooved SS304 stem for tamper switch installation, and electrostatic spray epoxy coating, Model Z41 ensures a bubble-tight seal and lifetime corrosion defense.

Review the complete technical specifications, material list, and dimensions for Model Z41 below:

▏Technical Features

Parameter	Value
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
Face to Face Standard	ASME B16.10
Sizes	2", 2.5", 3", 4", 5", 6", 8", 10", 12" (FM UL) 14", 16" (FM) 18", 20", 24"
Approvals	FM Approved, UL Listed, CUL, NSF / ANSI 61 & NSF / ANSI 372
Maximum Working Pressure	200PSI
Maximum Testing Pressure	400 PSI
Pressure 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
Design Feature	NPT plug on body with 2 operating nuts
Certification	Certified lead-free by NSF / ANSI 61 & NSF / ANSI 372 is available

▏Valve Material List

NO.	Name	Material	Standard
1	Body	Ductile Iron	ASTM A536 Grade 65-45-12
2	Disc	Ductile Iron +EPDM	ASTM A536 Grade 65-45-12, ASTM D2000
3	Connecting Part	C95400	ASTM B148
4	Sealing Pad	EPDM	ASTM D2000
5	Stem	Stainless Steel 304	ASTM A276
6	Yoke	Ductile Iron	ASTM A536 Grade 65-45-12
7	Bolt	Steel 1045	ASTM A29
8	Gland	Ductile Iron	ASTM A536 Grade 65-45-12
9	Nut	Steel 1045	ASTM A29
10	Rotating Nut	C95400	ASTM B148
11	Handwheel	Steel 1045	ASTM A29
12	Lock Nut	Steel 1045	ASTM A29
13	Countersunk Head Bolt	Steel 1045	ASTM A29
14	Cylinder Pin	Stainless Steel 304	ASTM A276
15	Plug	C95400	ASTM B148

▏Technical Features

Size	L	H	øD
2"	178	313	152
2½"	190	340	178
3"	203	387	191
4"	229	440	229
5"	254	546	254
6"	267	607	279
8"	292	786	343
10"	330	946	406
12"	356	1110	483

▏FAQ

📌 Q1: Does Ningjin APC Industries Model Z41 OS&Y gate valve hold the necessary FM/UL approvals and lead-free certifications for strict project compliance?

A: Yes, Model Z41 is fully certified for immediate municipal and commercial fire protection project submittals. It is FM Approved, UL Listed, and CUL Listed. Additionally, it carries certified lead-free compliance under NSF / ANSI 61 & NSF / ANSI 372, and is designed in strict accordance with the ANSI / AWWA C515 standard to guarantee seamless engineering approvals.

📌 Q2: What are the exact flange drilling standards and face-to-face dimensions for Ningjin APC Industries Model Z41 Gate Valve to verify piping blueprint compatibility?

A: Model Z41 is designed with standard face-to-face dimensions conforming strictly to ASME B16.10. To accommodate global piping specifications, its universal flanged ends adapt to multiple drilling connections: ASME/ANSI B 16.1 Class 125 ASME/ANSI B 16.42 Class 150 BS EN 1092-2 PN 16 GB / T9113.1 Size Range: Available from 2" to 24" (Sizes 2" to 12" are FM & UL listed; 14" to 16" are FM listed; 18" to 24" are non-listed). Refer to our dimensions table for precise L and H heights (e.g., 4" valve has an L of 229mm and H of 440mm).

📌 Q3: What pressure testing standards does Ningjin APC Industries Model Z41 Gate Valve undergo to pass on-site inspector checkouts?

A: Model Z41 is engineered to easily pass rigid hydrostatic testing prior to system commissioning. It supports a maximum working pressure of 200 PSI and undergoes rigorous maximum testing pressure of 400 PSI. This pressure boundary performance conforms fully to FM 1120 / 1130, UL 262, and ULC / ORD C262-92 testing guidelines.

📌 Q4: How is Ningjin APC Industries Model Z41 Gate Valve constructed to support tamper switch installation and resist on-site corrosion?

A: Model Z41 features a pre-grooved stem made of high-tensile Stainless Steel 304 (ASTM A276), enabling seamless, hassle-free installation of tamper switch signal indicators for electrical fire system linkage. To withstand buried or harsh outdoor environments, the ductile iron body (ASTM A536 Grade 65-45-12) is fully protected with an electrostatic spray epoxy coating on both interior and exterior surfaces.

📌 Q5: What are the available material grades and customized options for commercial procurement of Ningjin APC Industries Model Z41 Gate Valve?

A: To guarantee long-service sealing life, Model Z41 features a premium material matrix: ductile iron wedge encapsulated in EPDM (ASTM D2000), and a high-grade C95400 Aluminum Bronze (ASTM B148) rotating nut to prevent operation wear. For custom specifications, we can supply alternative epoxy thickness or specialized coatings upon request. Contact our sales team with your size requirements to receive MTC (Material Test Certificates), factory-direct pricing, and exact lead times.

▏Manufacturer & Contact Information

For global procurement, MTC certification requests, and volume pricing inquiries, please get in touch with our commercial engineering support department:

Ningjin APC Industries Incorporated Company

Brand Entity: Ningjin APC Industries

Manufacturing Plant Address: No. 18 Taishan Road, Ningjin County, Shandong Province, CN

Verification Directory: Verify our NSF Lead-Free Certificate Listing for Ningjin APC Industries

Direct Email: rain.cui@apc-valve.com / njcuishusheng@vip.163.com

WhatsApp / Tel: +86 186 0025 2968 (WeChat: cuiyuying01)

Sourcing Website: www.apc-valve.com

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