Flanged x Grooved End Resilient Wedge OS &Y Gate valve Z481

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.

We’re here to help:
Easy ways to get the answers you need.

Product Description


what is the Flanged x Grooved End Resilient Wedge OS &Y Gate valve ? How to installation in the fire Systems ?

Flanged x grooved end resilient wedge OS and Y gate valves are a special type of gate valve designed for use in fire protection systems. Let’s break down the main features:

1. Flange x Grooved End: This means the valve has both flange and grooved ends. The flange is used to bolt the valve to the pipe, while the grooved end is designed for quick and easy installation using a grooved connection system.

2. Elastic wedge: The valve has an elastic wedge, which is a flexible wedge made of rubber or EPDM rubber. This design helps the valve form a tight seal, even in applications where there is debris or sediment in the pipe.

3. OS & Y (External Screw and Yoke): This type of valve has a screw mechanism located on the outside of the valve body, providing a visual indication of the valve position (open or closed). The yoke is the support structure that holds the valve stem in place and allows it to move in a controlled manner.

To install this valve in a fire protection system:

1. Prepare the pipe: Make sure the pipe is cut and prepared to accommodate the flange and grooved ends of the valve.

2. Connect the valve: Use flange bolts to fix the valve to the pipe at the flange end. For the grooved end, use a grooved connection system to securely connect the valve.

3. Position the valve: The OS & Y function will help you visually confirm the position of the valve. Make sure the valve is in the open or closed position as required by the fire protection system.

4. Test the system: After installation, it is critical to test the entire fire protection system to ensure proper operation. This may include pressure testing, leak checks and functional testing of the valve itself.

Always follow the manufacturer’s installation guidelines and local fire codes to ensure a safe and effective installation. If you are unfamiliar with the specifics, it is recommended to consult a professional or someone with experience installing fire protection systems.

Product Drawing

Size L H D D1 E F G
2” 178 313 152 60.3 57.2 15.9 7.9
2 1/2″ 190 340 178 76.1 72.3 15.9 7.9
3” 203 387 191 88.9 84.9 15.9 7.9
4” 229 440 229 114.3 110.1 15.9 9.5
5” 254 546 254 141.3 137 15.9 9.5
6” 267 607 279 168.3 163.9 15.9 9.5
8” 292 786 343 219.1 214.4 1☑0 11.1
10” 330 946 406 273 268.3 19 12.7
12” 356 1110 483 323.9 318.3 19 12.7
NO. Name Material
1 Body Ductile Iron
2 Disc Ductile Iron +EPDM
3 Connecting Part C95400
4 Sealing Pad EPDM
5 Stem Stainless Steel 304
6 Yoke Ductile Iron
7 Bolt Steel 1045
8 Gland Ductile Iron
9 Nut Steel 1045
10 Rotating Nut C95400
11 Handwheel Steel 1045
12 Locl Nut Stee 1045
13 Countersunk Head Bolt Steel 1045
14 Cvlinder Pin Stainless Steel 304

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.