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Cast Steel Material Flanged Swing Check Valve Size 3 Inch

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Cast Steel Material Flanged Swing Check Valve Size 3 Inch

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Brand Name : Y

Model Number : H44H-150LB

Place of Origin : China

MOQ : 10 pcs

Price : Negotiable

Payment Terms : T/T

Supply Ability : 10000 pcs per year

Delivery Time : 5-8 work days

Packaging Details : wooden box 1200*1100*1100

Product name : Swing Check Valve

Color : Customer's Request,Grey

Standard : API

Body material : Carbon Steel

Connection : Flange Ends,RF

Size : DN50-300

Pressure : Medium Pressure,Class150LB~Class2500LB

Temperature of media : Medium Temperature,High Temperature

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Cast Steel Material, Size 3 Inch, Flanged End Swing Check Valve

Principle of action

The valve is composed of valve body, valve cover, valve disc, rocker and other parts. The valve disc can automatically prevent fluid backflow. The valve disc of the valve is opened under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the inlet pressure is lower than the outlet pressure, the valve disc automatically closes under the action of fluid pressure difference, its own gravity and other factors to prevent the medium from flowing back.

connecting measurement

size L D D1 D2 b-f Z-Фd H
2" 203 150 120.7 92.1 17.5-2 4-Ф19 150
2.5" 216 180 139.7 105 20.7-2 4-Ф19 168
3" 241 190 152.4 127 22.3-2 4-Ф19 179
4" 292 230 190.5 157 22.3-2 8-Ф19 233
5" 330 255 215.9 185.7 23-2 8-Ф22.2 253
6" 356 280 241.3 216 23.9-2 8-Ф22.2 297
8" 495 345 298.5 270 28-2 8-Ф22.2 334
10" 622 405 362 323.8 28.6-2 12-Ф25.4 395
12" 698 485 431.8 381 30.2-2 12-Ф25.4 451

Material of main parts

part name part material
body,bonnet,Bracket,rocker ASTM A216 WCB
Cylindrical pin ASTM A276 410
Disc ASTM A105/ASTM A216 WCB

Possible faults and elimination methods

Possible faults Cause of failure Elimination method
Leakage of flange sealing surface

1. Bolts are not tightened.

2. The gasket is broken or failed.

1. Tighten the bolts evenly and symmetrically.

2. Replace the gasket.

Leakage of sealing surface

1. Dirt and other matters are mixed between the sealing surfaces.

2. The sealing surface is damaged.

1 clean the sealing surface.

2. Trim the sealing surface or replace the parts.

Adopted standard

Design and manufacture: API 594-2017 flange, lug, butt welding and butt welding check valves

·Structure length: API 594-2017 flange, lug, butt welding and butt welding check valves

·Connecting end: ASME b16.5-2017 valve structure length

·Inspection and test: API 598-2016 inspection and test of valves

·Pressure temperature rating: ASME B16.34 flanged threaded and welded valves


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