Reinforced bellows stop valve

Product model: WJ41H

Design standard: EN 12516

Structure length: EN 558

Connecting flange: EN 1092-1

Test and inspection: EN 12266

Valve body material: GS-C25 / CF8 / CF8M / CF3 / CF3M / WC6 / WC9

Nominal diameter: DN15-DN600

Nominal pressure: PN1.6Mpa-10.0 MPa

Connection mode: flange, welding

Applicable media: steam, heat transfer oil, hot and cold water, molten salt, other chemical media, etc

Application Industry: petroleum, chemical industry, electric power, pharmaceutical, metallurgy, new energy and other industries


PRODUCT OVERVIEW

The reinforced bellows stop valve is made of metal bellows sealing technology. The high-performance metal bellows and bellows sealed stop valve are designed with bellows seal, which completely eliminates the shortcomings of rapid aging and easy leakage of ordinary valve stem packing, not only improves the use energy efficiency, increases the safety of production equipment, and reduces the maintenance cost and frequent maintenance, It also provides a clean and safe working environment. Widely used in: petrochemical industry, chemical fiber textile, plastic papermaking, electric power steel, printing and dyeing rubber, food and other industries.


STRUCTURAL FEATURES

1. The valve body adopts German coated sand casting technology, which greatly improves the surface finish and mechanical properties of the valve body, reduces the occurrence of pores, sand holes and cracks, and enhances the tensile strength of the casting.

2. When the valve is closed, the conical sealing surface with "scraping effect" can automatically remove surface impurities, which can ensure reliable sealing and longer service life of the valve disc.

3. Double sealing design (bellows + packing), in line with international sealing standards.

4. All bellows pass helium test and all valves pass standard test to ensure zero leakage.

5. Products above DN150 are equipped with special devices to effectively prevent the valve from shaking, noise and internal parts damage during use, and the service life is effectively increased by more than 150%.

6. Various valves can be provided according to working conditions.


EXECUTIVE STANDARD

Driving modeManual
Electric
Design criteriaDIN3356
Structure lengthDIN3202
Connecting flangeDIN2543-2545
Test and inspectionDIN3230


PRODUCT PERFORMANCE SPECIFICATION

Nominal pressure(MPa)Shell test pressure(MPa)Sealing test pressure(MPa)Applicable temperature(℃)
1.62.41.76
≤350℃
2.53.752.75
4.06.04.4
6.49.67.04

Note: series valve connecting flanges can be designed and manufactured according to user requirements.


MATERIAL OF MAIN PARTS

Part name

Texture of material

valve body

GS-C25、GGG-40、1.4401

valve seat

1.4301、Stellite

Valve disc

1.4021、1.4401+ Stellite

Pin

1.4301、1.4401

Bellows assembly

1.4301、1.4401

Valve stem

1.4021、1.4301、1.4401

shim

Flexible graphite + stainless steel

Valve cover

GS-C25、GGG-40、1.4401

Nut

ASTM 194-2H、A194-8

Stud bolt

ASTM 194-B7、A193-B8

Filler

Flexible graphite

Gland

1C25、1.4301、1.4401

Positioning piece

1C25

Stem nut

Copper alloy、D2、BL2

handwheel

Carbon steel

Combined cap

1C45


MAIN SPECIFICATIONS, DIMENSIONS AND WEIGHT

ModelWJ41H-16
Pressure classPN16
caliber1520253240506580100125150200250300350
L130150160180200230290310350400480600730850980
H195200220225235250260265370400515550600630680
Do130130130130150150180180200200400450450500500
Weight(Kg)44.557912.51823415490160260410610

 

ModelWJ41H-25
Pressure classPN25
caliber1520253240506580100125150200250300350
L130150160180200230290310350400480600730850980
H195200220225235250260265370400515550600630680
Do130130130130150150180180200200400450450500450
Weight(Kg)44.5579.5131924435795168300510680

 

ModelWJ41H-40
Pressure classPN40
caliber1520253240506580100125150200250300350
L130150160180200230290310350400480600730850980
H195200220225235250260265370400515550600630680
Do130130130130150150180180200200400450450500500
Weight(Kg)44.5581013.52025456098171340580780

Product recommendations

+86-577-67383555
qrCode