Lifting Type Check Valve

Lifting Type Check valve

Purpose

The Lifting Type Check Valve, often designated as H41H/Y/W, serves a vital purpose in various industrial applications. Its primary function is to control the flow of fluids within a piping system, allowing the flow in one direction while preventing it from reversing. Unlike the swing type check valve, the lifting type relies on the upward motion of a disc or piston to open and allow flow, with gravity or backflow pressure causing it to close when flow reverses.

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Features

  1. The primary function of a Lifting Type Check Valve is to allow fluid to flow in one direction while preventing backflow, ensuring the integrity of the system and preventing inefficiencies or damage.
  2. These valves utilize a lift mechanism, such as a disc or piston, to control the opening and closing of the valve. When fluid flows in the correct direction, it lifts the mechanism to allow flow; when there is reverse flow or pressure drop, the mechanism descends, creating a tight seal.
  3. Type Check Valves are known for their ability to provide a tight seal. This sealing capability prevents leakage, ensuring the integrity of the fluid system.

Main Performance Parameters
Test Pressure
(MPa)
PN
2.5
4.0
6.4
10.0
Shell strength test
pressure
3.8
6.0
9.6
15.0
Sealing Test
(Liquid)
2.8
4.4
7.0
11.0
Sealing Test (Gas)
0.6

Suitable media
C
P
R
Water, Oil, Steam
Corrosive medium
Suitable Temperature
≤425
≤200
≤200

Executive Standard

  • Design and manufacture: GB/T12236.
  • Flange standard: JB/T79.
  • Structural length: GB/T12221.
  • Test and inspection: JB/T9092.

Main Part Materials


Type
Title of Part
Body, Bonnet
Disc, Seat ring
Gasket
Reinforced
parts
H41(C Type)
WCB or 25
H:25+Chrome Stainless steel
Y:25+Carbide alloy

Sp-WD
304/Grap-
flexible
graphite
Sp-WD
Steel-band
adbestos
gasket
Superior
carbon
steel
H41Y(l Type)
CrMo
CrMo +Hard alloy
Alloy steel
H41W(R Type)


CrNiTi Stainless steel gasket
Stainless steel
H41W(R Type)

Main dimensions

PN2.5(MPa)
DN
15
20
25
32
40
50
80
100
150
200
L
130
150
160
180
200
230
310
350
480
600
H
100
105
120
130
135
149
169
198
255
305
PN4.0(MPa)
DN
15
20
25
32
40
50
80
100
150
200
L
130
150
160
180
200
230
310
350
480
600
H
100
105
120
130
135
149
169
198
255
305
PN6.4(MPa)
DN
15
20
25
32
40
50
80
100
150
200
L
210
230
230
260
260
300
380
430
550
650
H
100
110
125
140
168
170
205
230
265
310
PN10.0(MPa)
DN
15
20
25
32
40
50
80
100
150
200
L
210
230
230
260
260
300
380
430
550
650
H
100
110
125
140
168
170
205
230
265
310

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