Focus On Triple Offset Butterfly Valve 


Wafer Type Triple Eccentric Butterfly Valve

Model: D373H-150LB

Origin: Oubei, Wenzhou

Type: Wafer Type

Specification: 16 inches

Valve body material: WCB

Valve Disc material: WCB

Valve Stem material: F6a

Sealing material: SS304 + graphite

Driving Mode: Worm Gear

product details

wafer type triple eccentric butterfly valve  advantage :1. The valve adopts three eccentric sealing structure, the valve seat and butterfly plate are almost free of wear, and the tighter the sealing function is. 2. The sealing surface of butterfly plate is overlaid with cobalt based cemented carbide, which is wear-resistant and has long service life. 3. Large size butterfly plate adopts quilting frame structure, with high strength, large flow area and small flow resistance. 4. The driving device can be rotated in multiple positions (90 degrees) ° Or 180 °) Installation, easy for users to use. 5. The valve has a two-way sealing function, and can be installed in any direction without the restriction of medium flow direction and the influence of space position. 6. The sealing ring is made of stainless steel, which has the double advantages of metal hard seal and elastic seal. It has excellent sealing performance, corrosion resistance and long service life no matter at low or high temperature.

1、 Structure introduction

API standard butterfly valve adopts three eccentric structure. The valve seat seal is metal multi-layer hard seal structure, which is usually metal and graphite layer, such as 304 + graphite, 316 + graphite. Such hard seal can also be made into single-layer soft seal PTFE, rptfe, ppl, EPDM, NBR, etc

Three eccentric butterfly valve features:
1. Short structure size, small volume, light weight, easy to operate
2. Using the whole shaft mechanism, the butterfly plate has high strength and large flow area
3. The unique three eccentric design reduces the friction loss of the seal and greatly prolongs the service life
4. Metal hard seal is resistant to high temperature, low temperature and high pressure, and has a wide range of applications

2、Relevant standards of API standard butterfly valve

Design and manufacture: API 609
Structural length: API 609
Connecting flange: ASME B16.5
Inspection and pressure test: API 598,
Any valve produced by our company is pressed in strict accordance with the pressure test standard, and the zero leakage butterfly valve is allowed to leave the factory only after the pressure is qualified.

Shell strengthSealing strength of high pressure waterAir seal strength

Under the above pressure, the zero leakage can be achieved.
Accept the sampling and full inspection of the third party quality inspection unit entrusted by the customer and the end customer, but explain to us in advance

3、Detailed connection size

Nominal pressureNominal sizeStructural lengthDrilling center distanceapertureNumber of flange end holes
150LBNPS 16102539.8416

4、Material of main parts

Body: WCB
Butterfly board: WCB
Stem: f6a
Butterfly seal: SS304 + graphite
Bracket: WCB

5、About our company

Tkok Valve  is a professional high quality butterfly valves manufacturers, focusing on research and development of butterfly valve series products.
The butterfly valves produced by Tkok Valve, both the valve body and valve disc all use designed casting molds by Tkok Valve company,not use the foundry no matter the wall thickness of the valve body,flange thickness and face to face dimensions,all can meet the requirement of relevant standard.
Tkok Valve mainly produce eccentric butterfly valves,high performance butterfly valves,and also have good supply for the centerline butterfly valves and fluorine-lined butterfly valves.

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