Wafer End Butterfly Valve with Gearbox /Lever(WD-371G/WD-371L)

Code: WD-371G/WD-371L
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,Drain Pipe,Fire Protection Systems etc.

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

Product Description


what is the Wafer End Butterfly Valve with Gearbox /Lever? What should you pay attention to when using Wafer End Butterfly Valve with Gearbox /Lever?

The Wafer End Butterfly Valve with Gearbox/Lever is a type of butterfly valve designed with a wafer connection for installation between flanges. The gearbox or lever is the operating mechanism used to control the position of the valve disc, regulating the flow of fluids through the pipeline.

Wafer End:

Design: The wafer end design allows the valve to be installed between flanges without the need for additional gaskets.
Butterfly Valve:

Function: The butterfly valve controls the flow by rotating a disc in the flow path.

Operating Mechanism: The gearbox or lever is used to manually operate the valve. The gearbox provides mechanical advantage for easier operation.
Considerations when using Wafer End Butterfly Valve with Gearbox/Lever:

Ensure proper alignment when installing the valve between flanges. Follow the manufacturer’s guidelines for installation.
Operating Conditions:

Consider the temperature and pressure conditions of your application to ensure that the valve and its components are suitable for the environment.
Material Compatibility:

Check that the materials used in the valve (body, disc, seat) are compatible with the type of fluid being handled to prevent corrosion or damage.
Gearbox/Lever Operation:

Regularly inspect the gearbox or lever for any signs of wear, damage, or malfunction. Lubricate as recommended by the manufacturer.

Implement a regular maintenance schedule to ensure the valve operates smoothly. This includes checking for leaks, inspecting the disc and seat for wear, and addressing any issues promptly.
Torque Requirements:

Be aware of the torque requirements for the valve operation. Over-torquing or under-torquing can affect the performance of the valve.
Emergency Shutdown Procedures:

Establish and communicate emergency shutdown procedures in case of valve failure or system issues.
Sealing Integrity:

Ensure that the wafer butterfly valve provides a tight seal when closed to prevent leakage.
Compliance with Standards:

Ensure that the valve meets relevant industry standards and specifications.

Provide training for personnel responsible for operating and maintaining the valve to ensure proper handling and troubleshooting.
Regular inspections, proper installation, and adherence to maintenance practices are crucial for the reliable and efficient operation of the Wafer End Butterfly Valve with Gearbox/Lever. Following the manufacturer’s guidelines and industry best practices will help maximize the valve’s lifespan and maintain the integrity of your piping system.

Product Drawing

Size A B C D H1 H2 K1 K2 J P M N d L
2″ 110 85 32 100 32 65 267 151 152 90 70 9 10 42
2 1/2” 125 95 32 112 32 65 267 151 152 90 70 9 10 44.2
3″ 140 100 32 120 32 65 267 151 152 90 70 9 11 45.3
4″ 160 100 32 161 32 65 267 151 152 90 70 9 14 52
5” 170 125 32 182 32 65 267 151 152 90 70 9 14 54.4
6” 190 140 32 216 32 65 267 146 200 90 70 9 16 55.8
8″ 230 175 32 260 37 77 267 233 290 125 102 12 19 60.5
10” 260 200 45 320 / 77 / 233 290 125 102 12 22 66.5
12” 300 240 45 375 / 77 / 226 290 150 125 14 26 76.9
NO. Name Material
1 Upper Shaft Sealing Nut WCB
2 Shaft Seal EPDM
3 Body Ductile Iron
4 Upper Shaft 416 Stainless Steel
5 Disc+Rubber Seat Ductile Iron+EPDM
6 Lower Shaft 416 Stainless Steel
7 Lower Shaft Sealing Nut WCB
8 End Face Seal EPDM
9 Stem Bushing PTFE/C95400
10 O-Ring EPDM
11 Lever
12 Gearbox

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.