Wafer & Log Type Pressure Relief Valve Manual Galvanized Disc

Wafer Butterfly Valve , Ductile Iron Body/ Disc, Epoxy Powder Coating For Water

APPLICABLE STANDARDS

A. Design according : API 609

B. Test standard according: JIS B2003

C. Connect flange standard according: JIS B2212

D. Face to face standard according: JIS B2002

1. BRIEF INTRODUCTION:

The butterfly valve is operated by the disc rotating form 0° to 90°, can be applied to cut off or regulate

the flow of medium.

The valve can be actuated by operating lever, handle wheel electric actuator or pneumatic actuator.

Widely used for potable water supply, waste water treatment, electric power plant, gas supply,

warm-air system, smelting plant, ship building, textile, petroleum, chemistry, or other light industries.

2. Specification

3. FEATURES

⊙ Metal seated, good seal

⊙ Low weight

⊙ Low flow resistance

⊙ Small operation torque

⊙ Easy to install and maintain

⊙ Open-close 90° more smoothly

4. Item Name of part Material Spec

5. Operation:

5.1. The two pipe flange should be smooth.

5.2. Put the butterfly valve in the pipe line, fixed the orientation hole first.

6. Delivery:

When delivery or store the butterfly valve, should keep in dry and cool environment.

7. Note:

7.1. Pipe flange should same as the butterfly valve flange.

7.2. Check the valve before installed, the environment should correspond to the butterfly valve

specification.

7.3. Before open butterfly valve, checking the disc without dirt.

7.4. The disc must be shut off place when installed.

7.5. Adjusting the pipe connect before installed.

7.6. The connect flange should be parallel.

7.7. After installed, the pressure test disc should be open place.

7.8. If the butterfly can not natural open or close, please kindly check it careful, can not strike, tamp or

use extension lever.

7.9. When maintenance or operation, must check the stem, lever, gear box or actuator have correctly

connect. Otherwise the stem will be push by pipe pressure.

8. The malfunction and resolving:

9. Maintenance

Open the worm box cover and add some butter per two months.

Check the seal, packing and flange, if leak, please maintain ASAP.

Specifications:

Size: DN50 - 3000
Temperature: -15℃ - 150℃
Pressure: 1.0MPa/1.6MPa

Materials
Materials of Body : Ductile Iron (GGG40, GGG50). Cast Iron (GG25), Stainless Steel

Materials of Disc : Stainless Steel. Nickel Plated, Ductile Iron, Ductile Iron Coated Plastic,

Titanium Steel, Copper Alloy etc

Materials of Seat : Ethylene-Propylene-Diene Monomer (EPDM), Polytetrafluoroethylene (PTFE),

Nitrile Rubber (NBR), Chloroprene, Chlorosulfonated Polyethylene (Hypalon),

Silicon, Fluoroelastomer (VITON) , Caoutchouc etc.

Materials of Stem : Stainless Steel. Carbon Steel ,2Cr13

A butterfly valve is a type of flow control device, typically used to regulate a fluid flowing through a section of pipe.
The valve is similar in operation to a ball valve. A flat circular plate is positioned in the center of the pipe.
The plate has a rod through it connected to an actuator on the outside of the valve. Rotating the actuator turns the
plate either parallel or perpendicular to the flow. Unlike a ball valve, the plate is always present within the flow,
therefore a pressure drop is always induced in the flow regardless of valve position.

Wafer Rubber Seated Butterfly Valves

Shanghai KangQuan Valve Co. Ltd. is a specialized valves manufacture, which has 2,500 tons of 

valves output capacity annually. We pay much attention to the quality so our products are superior in 

quality compared with those of other manufacturers. After years of research and development, we have

accumulated a wealth of information and experience in this field. We enjoy a high reputation in dealing 

with both domestic and overseas trading.

Shanghai KangQuan Valve Co. Ltd.  covers an area of  15000 square meters. Our products line includes

various kinds of gate valves, globe valves, ball valves, check valves, cock valves, butterfly valves of , etc., 

up to the international advanced standards of ANSI, API, JIS, DIN, BS and so on . Materials mainly include

carbon steel ,stainless steel ,ductile iron and so on .with hand wheel worm-gear actuator and pneumatic

and electric actuator to be selected ,widely used in the industries of petrochemical, natural gas, metallurgy, 

electric power , pharmaceutical , construction, etc..

With highly qualified professionals and first class service, Shanghai KangQuan Valve Co. Ltd. has

established a highly respected enterprise which has been relied on for years. And we will continuously 

offer customers the most accurate and high quality delivery service possible.

Excellent quality assurance is our sales purpose, 
Competitive price is our sales policy, 
On time product delivery and responsive service is our standard.

Shanghai KangQuan Valve Co. Ltd. hopes to work together with you for a better future. Let’s work 

together building a mutually beneficial relationship that will last for years.