Product Description Related Products

Integral Forged Bellows Sealed Stop Valve

Working principle

The valve uses a conical valve core instead of a flat valve core, and the sealing surface does not have any impurities left. When closed, the sealing surface has a self-cleaning function. With the help of the conical valve core, the axial force of the valve village can be converted into a sealing force, which has better sealing performance.

For use in steam and condensate, process fluids, hot and cold water, thermal oils, compressed air and other gas systems.

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Product Description

Features

•Compared with castings, the valve body of the bellows-sealed stop valve with integral flange forging has a more uniform structure, better density, better strength and smaller dimensional error.
•The integral hot forging process has high material density, which is particularly suitable for harsh working conditions such as high temperature, high pressure, toxicity, and strong permeability.
•The flange and valve body are hot forged at one time, and the shell will never leak.
•The double seal of packing + bellows prevents running, bubbling, dripping and leakage.
•The cone-shaped sealing valve core can be customized with the sealing surface material.
•Compact structure and easy to install.

Materials	Restrictions (carbon steel/stainless steel)
• Valve body, valve cover: A105, F304, F316L • Valve stem: 20Cr13, F304, F316 • Bellows: SS304, SS316L • Valve disc: 20Cr13, F304, F316, Stellite • Valve seat: 20Cr13, F304, F316, Stellite	• Design pressure (PMA): 100bar • Maximum operating pressure (PMO): 100bar • Maximum operating temperature (TMO): 425°C

Technical Parameters

model	DWJ41H	DWJ61H
Maximum allowable pressure	100bar
Maximum allowable temperature	425℃
Installation form	Flange	welding

Dimensions/Weight (approximate) mm and Kg

model	Casting DWJ41H						Welding DWJ61H
Nominal diameter	15	20	25	32	40	50	15	20	25	32	40	50
A(mm)	130	150	160	180	200	230	79	92	111	120	152	172
B(mm)	220		256	267	325	348	240		256	267	325	348
C(mm)	120		140		160	180	120		140		160	180

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