Focus On Triple Offset Butterfly Valve 


150lb-38inch API standard butterfly valve, double clip type, three eccentric metal hard seal butterfly valve, B series flange

Model: D373h-150lb

Origin: Oubei, Wenzhou

Type: Wafer Type

Specification: 38 inches

Material: WCB

Valve Body Material: WCB

Valve Disc Material: WCB

Valve Stem Material: 410

Sealing Material: SS304 + graphite

Driving Mode: Worm Gear

product details

150lb-38inch API standard butterfly valve, double clip type, three eccentric metal hard seal butterfly valve, B series flange has the advantages of simple operation and good sealing, and is suitable for various media.

1、 Structure introduction

American standard butterfly valve adopts three eccentric structure, and the valve seat seal is metal multi-layer hard seal structure, which is usually the layer of metal and graphite, such as 304+ graphite and 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 specificationStructural lengthDrilling centerFlange hole diameterFlange hole number
150LBNPS 382161070440

4、Material of main parts

Body: WCB
Butterfly board: WCB
Stem: 410
Butterfly seal: SS304 + graphite
Bracket: WCB
Worm gear case: QT450

The default worm gear box is made of QT450 material. Our company can also produce WCB, CF8 and other worm gear butterfly valves according to customer demand

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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