UL/FM 200PSI Resilient Wedge NRS Gate Valve - Grooved End Z85

Date Updated: July 27, 2026 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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UL/FM 200PSI Resilient Wedge NRS Gate Valve - Grooved End Z85

▏Product Description

As a premier UL/FM gate valve manufacturer and global B2B supplier, Ningjin APC Industries engineered the UL/FM 200PSI Resilient Wedge NRS Gate Valve - Grooved End Z85 to deliver absolute flow isolation, bubble-tight sealing, and long-term zero-maintenance reliability across demanding fire protection and potable water mainlines. Fully conforming to ANSI / AWWA C515 standards and ASME B16.10 face-to-face specifications, this heavy-duty non-rising stem (NRS) valve provides certified 200 PSI maximum working pressure containment (and 400 PSI hydrostatic test pressure) for high-rise building fire suppression systems, industrial factory inflow water networks, municipal distribution lines, and automatic sprinkler systems.

Engineered specifically to overcome field maintenance failure points such as sediment accumulation and stem leakage, the Z85 model features a full-bore, straight-through bottom design that prevents silt, rust scale, and foreign debris from storing at the valve floor. Its resilient wedge disc—cast in high-strength Ductile Iron and fully encapsulated in vulcanized EPDM rubber—guarantees leak-free bi-directional closure through an extended service life validated by at least 5,000 cycling operations. A self-sealing bonnet structure ensures that as internal pipeline pressure increases, the bonnet gasket seal tightens proportionally, while a multiple O-ring stem seal architecture allows top-seal protection under pressure during operation and routine field maintenance without risk to operators.

To streamline site installation and mechanical control interfacing, the valve body is equipped with grooved end connections manufactured to ANSI / AWWA C606 or Metric standards. The Non-Rising Stem design incorporates a body NPT plug along with dual operating nuts (wrench nut and cap setup), enabling seamless direct pairing with vertical indicator posts or wall-type indicator posts in buried underground mains and wall-penetrating riser assemblies. Every valve receives electrostatic epoxy coating across all interior and exterior surfaces for superior anti-corrosion endurance, and is available with NSF / ANSI 61 & NSF / ANSI 372 lead-free certifications for safe application in clean drinking water supply infrastructure.

Review the technical features, material matrix, and standardized sizing parameters detailed in the tables below to align with your project specifications and engineering RFQs.

▏Technical Features

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	200PSI
Maximum Testing Pressure	400PSI
Pressure Conformance 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 & Operation Features	NPT plug on body with 2 operating nuts
Lead-Free Certification Availability	Certified lead-free by NSF / ANSI 61 & NSF / ANSI 372 is available

▏Valve Material List

NO.	Name	Material
1	Body	Ductile Iron
2	Disc	Ductile Iron+EPDM
3	Nut	C95400
4	Gasket	EPDM
5	Stem	Stainless Steel 304
6	Cap	Ductile Iron
7	Retainer Ring	C95400
8	O-ring	EPDM
9	Wrench Nut	Ductile Iron
10	Minipad	Steel 1045
11	Bolt	Steel 1045
12	Stud	Steel 1045
13	Nut	Steel 1045
14	Flat Washer	Steel 1045
15	Coupling Flange	Ductile Iron
16	Platen	Ductile Iron
17	Countersunk Head Bolt	Steel 1045

▏Dimensions

Size	L	H	øD	øE	F	G
2"	178	265	60.3	57.15	15.9	7.9
2½"	190	289	76.1	72.3	15.9	7.9
3"	203	326	88.9	84.9	15.9	7.9
4"	229	355	114.3	110.1	15.9	9.5
5"	254	410	141.3	137	15.9	9.5
6"	267	455	168.3	163.9	15.9	9.5
8"	292	558	219.1	214.4	19	11.1
10"	330	648	273	268.3	19	12.7
12"	356	745	323.9	318.3	19	12.7

▏FAQ

Q1: Which global fire safety certifications and pressure standards govern the UL/FM 200PSI Resilient Wedge NRS Gate Valve - Grooved End Z85?

The Z85 gate valve holds official certifications from FM, UL, and CUL, strictly complying with pressure requirements defined in FM 1120 / 1130, UL 262, and ULC / ORD C262-92 under ANSI / AWWA C515. Produced by a trusted UL listed FM approved resilient wedge gate valve manufacturer, Ningjin APC Industries guarantees a maximum working pressure of 200 PSI and a maximum testing pressure of 400 PSI across temperatures from 0~80°C (32~176°F). NSF / ANSI 61 & 372 lead-free certifications are also available for dual fire protection and potable water networks.

Q2: How does the Non-Rising Stem structure operate with an NRS gate valve with vertical indicator post operating nut 10 inch setup?

The Z85 valve is constructed with a dedicated NPT body plug and dual operating nuts on its Ductile Iron cap and wrench nut assembly. This specialized arrangement enables direct mechanical attachment to vertical indicator posts or wall-type indicator posts across all available dimensions, including 10 inch and 12 inch sizes. This design allows underground fire mains and isolated valve vaults to provide clear visual status indication without compromising pressure integrity.

Q3: What engineering features prevent clogging in a straight-through bottom fire gate valve anti debris setup?

The Z85 employs a full-port, straight-through bottom body cavity that eliminates the bottom recess found in conventional valves, preventing foreign matter, silt, and rust debris from accumulating. Combined with an EPDM-coated Ductile Iron wedge tested to withstand over 5,000 cycling operations, a pressure-assisted self-sealing bonnet gasket, and a multi-O-ring stem seal, the valve provides lifetime maintenance-free performance and reliable shutoff.

Q4: What material specifications apply when ordering an NSF 61 certified lead free ductile iron fire protection valve wholesale?

The Z85 valve body, bonnet, cap, coupling flange, platen, and wrench nut are manufactured from high-strength Ductile Iron. Mechanical stem linkage utilizes a Stainless Steel 304 stem and C95400 aluminum bronze nuts and retainer rings, complemented by Steel 1045 fasteners and EPDM seals. Internal and external surfaces are finished with electrostatic epoxy coating, ensuring full NSF / ANSI 61 & 372 lead-free compliance.

Q5: What dimensional standards apply when sourcing for high-rise building fire suppression system gate valves factory projects?

The Z85 grooved end gate valve conforms strictly to ANSI / AWWA C606 or Metric groove standards, with face-to-face dimensions standard to ASME B16.10. Sizing options range from 2" (FM approved) through 2.5", 3", 4", 5", 6", 8", 10", and 12" (FM and UL listed). Face-to-face dimensions scale from 178 mm (2") up to 356 mm (12"), making it an ideal drop-in replacement for high-rise commercial fire sprinkler lines.

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