Grooved End Resilient Wedge NRS Gate Valve Z85

Size: 2″-12”(DN50-DN300)
Material: Ductile iron ASTM A536, 65-45-12/Cast Iron ASTM A126 Class B/EN-GJS-450-10/ ENJS1040
Dimension: AWWA C515,ASME B16.10,BS5163,AWWA C503, BS & DIN Standard, BS750,EN1074,BS EN14339, BS 5041, BS 5154
Connection: AWWA C606, ASME B16.1 CL 125, ISO 5211,ASTM A888, ISO 6182, BS EN 1092-2
Pressure Rating: 200PSI
Temperature: -10-120 ℃
Surface Treatment: ANSI/AWWA C550,Epoxy coated interior and exterior by Electrostatic
Certificate: UL Listed/FM Approved /NSF/ANSI61&NSF/ANSI 372
Medium: Water, gas etc.

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Product Description


what is the Grooved End Resilient Wedge NRS Gate Valve Z85 ? How to working in the fire Piping Systems ?
The Grooved End Resilient Wedge NRS (Non-Rising Stem) Gate Valve Z85 is a specific type of gate valve designed for use in various piping systems, including fire protection systems. Let’s explore its characteristics and understand how it works in fire piping systems:
Characteristics of Grooved End Resilient Wedge NRS Gate Valve Z85:
1. Grooved End:
The valve features grooved ends, allowing for a quick and efficient installation using grooved couplings. This design facilitates easy connection to pipes without the need for welding or threading.
2. Resilient Wedge:
The resilient wedge design incorporates a flexible wedge made of materials like rubber or EPDM. This design ensures a tight seal, even in the presence of debris or sediment in the pipeline.
3. NRS (Non-Rising Stem):
The non-rising stem design means that the stem of the valve does not move vertically during operation. Instead, the gate moves up and down to control the flow.
4. Fire Piping Systems:
Gate valves, including the Grooved End Resilient Wedge NRS Gate Valve Z85, are commonly used in fire protection systems to control the flow of water. They play a crucial role in isolating sections of the pipeline and regulating water supply during firefighting.
Working in Fire Piping Systems:
Prepare the pipes by ensuring they have grooved ends compatible with the valve’s grooved connections.
Connect the valve to the pipes using grooved couplings. Follow the manufacturer’s guidelines for proper installation procedures.
2.Flow Control:
The valve can be positioned to either allow or block the flow of water in the fire piping system. In emergencies, the valve can be quickly closed to control the flow and direct water to specific areas.
3.Regular Inspection:
Periodically inspect the valve to ensure it is in good working condition. Check for any signs of wear, damage, or leakage.
Conduct regular tests on the entire fire protection system, including the valve, to ensure proper functionality. This may include pressure tests and flow tests.
5.Emergency Response:
In the event of a fire, the valve can be part of an automated or manual system to control the flow of water to the affected area.
Always follow the manufacturer’s guidelines and adhere to local fire protection codes when installing and maintaining gate valves in fire piping systems. Regular inspections and testing are crucial to ensure the reliability of the system during emergencies. If you’re not familiar with fire protection system installations, it’s advisable to consult with a professional or someone experienced in this field for guidance.

Product Drawing

Size L H 0D E F G
2″ 178 265 60.3 57.15 15.9 7.9
2 1/2” 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
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

Quality Control

Advanced equipment guarantee the production of high quality products.
Advantages of DISA moulding line:1. High quality precise casting less scrap and lower finishing costs. 2.High Production Efficiency(1)Fast production: 350 moulds per hour, pattern changing time cut down to 2-3 minutes
(2).higher profitability over a longer service life. 3. Safety and Environmental Friendly safe, easy and clean operation (CE and ISO 14001 compliant)
High-precision, hydraulicly driven mould transport,no shifting, distortion, ordisplacement of moulds.
The advantage of the sand supply system:The sand supply system is from the best class sand processing equipment manufacturers of China, with straight structure, easier maintenance, environmently friendly, high degree of automation, high safety factor, good parameters of sand stability.
Fluid Tech Group is honored as the National enterprise technical center and is capable and qualified to conduct full series of tests and inspections including chemical checking, etc. Inspection facilities include:spectrometer, carbon sulfur analyzer, metallurgical microscope, tensile strength testing equipment, pressure testing equipment, adhesive force testing equipment, CMM, hardness tester, etc.From incoming inspection to finished product, quality is checked a
nd monitored in the whole process. Each step of the manufacturing process is carefully documented, regularly reviewed for revision control and updatin
g standard. Quality procedures are constantly monitored and updated to assure that only the highestand most consistent quality products are supplied to our valued customers.

Application and Case

Products are used in fire protection system, water system, HVAC system, plumbing, gas system, irrigation system, etc.These products are used in many projects , such as China Taiwanese Building 101, Xiamen Building,Wuhan Expo Building and other famous landmark projects.


1. What is the minimum quantity of the order?
Answer: The purchase volume of mixed products is 4 tons
2. How long is the delivery time of the order?
Answer: The delivery time for general orders is about 30 days. If the order is urgent and we have stock, around 7 days.
3. What payment methods do you accept?
Answer: We accept payment terms such as TT, L/C, DP, Western Union, Paypal, etc.
4. Where is your departure port of shipment? Is it possible to deliver to the designated warehouse?
Answer: The port of departure of our goods is generally Tianjin Port or Qingdao Port. We can transport the goods to designated warehouses, such as Yiwu, Guangzhou, etc.
5. What certificates do your products have?
Answer: Our products have FM/UL certificates, and we cooperate with third-party quality inspection certification before the factory, such as SGS,TUV
6.What are the series of your products?
Answer: Our products are divided into heavy series, medium series and light series according to different markets and standards. In order to buy more competitive products for you, please communicate your purchasing needs with the salesperson.
7. Do product packaging cartons and labels support customization?
Answer: Packaging cartons and labels can be customized according to customer requirements.
8.Does the purchased product support customization?
Answer: The product supports customization, but there are purchase quantity requirements and mold costs. For details, please consult the salesperson.
9.What are the packaging methods of the product?
Answer: The packaging of the product includes carton packaging, pallet packaging, wooden box packaging, and woven bag packaging.