Flanged x Mechanical Joint End Resilient Wedge NRS Gate Valve Z45-300FJA

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: 300PSI
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 Flanged x Mechanical Joint End Resilient Wedge NRS Gate Valve Z45-300FJA? Why are the two ends of the gate valve connected in different ways? How to install in fire duct system?
Flange x Mechanical Joint End Resilient Wedge NRS (Concealed Stem) Gate Valve Z45-300FJA is a special type of gate valve designed for applications requiring flange and mechanical joint connections. Let’s break down the key aspects of this valve and understand why there are two different connection types:
1. Flange x mechanical joint end:
Flange End: The valve has a flange on one end that allows for a bolted connection to the pipe using a flange connection. Flanges are commonly used in various industries to achieve safe and reliable connections.
Mechanical Connector End: The other end of the valve has a mechanical connector that provides an alternative connection method. Mechanical joints typically involve grooved or threaded connections and are typically used where flexibility and ease of installation are required.
2. Reasons for different connection types:
Versatility: Dual connection types provide installation versatility. Depending on the specific requirements of the piping system, users can choose between flange connections or mechanical joint connections.
Compatibility: Different projects or sections of pipeline may have specific requirements or existing infrastructure that require different connection methods.
3. Fire piping system installation:
Ensure that the pipes in the fire piping system are prepared for flange connections or mechanical joint connections, depending on the end of the valve. For the flange end, use bolts to secure the valve to the flanged pipe, ensuring a tight seal using appropriate gaskets. For mechanical joint ends, follow the manufacturer’s guidelines and connect the valve using the specified mechanical joint method (e.g., notched or threaded).
4. Testing and Compliance:
Before placing the system into service, perform a thorough test to ensure that the valves are functioning properly and are not leaking.
Comply with relevant industry standards and codes for fire protection systems, such as those set forth by the National Fire Protection Association (NFPA).
Be sure to refer to the manufacturer’s documentation for specific guidelines related to the Flange x Mechanical Joint End Resilient Wedge NRS Gate Valve Z45-300FJA. If you are new to fire duct system installation, it is recommended to consult a professional or someone with experience installing fire protection systems to ensure compliance with safety standards and proper functionality.

Product Drawing

Size DN L D H
22” 65 190 178 292
3” 80 203 191 322
4” 100 229 229 342
5” 125 254 254 412
6” 150 267 279 448
8” 200 292 343 534
10″ 250 330 406 635
12″ 300 356 483 720
NO. Name Material
1 Flat Washer Steel 1045 or Stainless Steel 304
2 Hexagon Socket Screw Steel 1045 or Stainless Steel 304
3 Sealing Ring EPDM
4 O-Ring EPDM
5 Sealing Ring EPDM
6 O-Ring EPDM
7 Bonnet Ductile Iron
8 Stem Stainless Steel 304 or Steel 1045
9 Plug Stainless Steel 304 or Steel 1045
10 Disc Ductile Iron +EPDM
11 Body Ductile Iron
12 Sealing Ring EPDM
13 Retaining Ring C95400
14 Gland Ductile Iron
15 Post Flange Ductile Iron
16 Wrench Nut Ductile Iron
17 Bolt Stainless Steel 304 or Steel 1045
18 Washer Stainless Steel 304 or Steel 1045
19 Hexagon Socket Screw Steel 1045 or Stainless Steel 304
20 Stem Nut CF8 or C95400

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.