China Lift check valve supplier

Lift check valve

Material of Lift check valve: A536,A126,WCB,WC6,LCB,CF8,CF8M.CF3.CF3M,CN7M,904L

Size of Lift check valve: 1/2inch(DN15) - 20 inch (DN500)

Pressure of Lift check valve: 150LB(PN16)-2500LB(PN420)

Connection type: Flange(FF,RF,FM,RTJ) BW

Kind of drive : No

Operating temperature: -100℃ - 600℃

Working medium : water, gas,oil,Sulfuric acid and hydrochloric acid

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Catalogue:

Cast steel gate,globe,check valves.pdf

Introduction for lift check valve.

Lift check valves are also called piston check valves. They are essentially globe valves without the stem and top works, allowing the disc to respond to flow rates and direction. The disc has linear movement and is typically body-guided with conical seating surfaces. Springs can be added above the disc to provide more closure force when the disc returns to its closed position. Some manufacturers include externally attached equalizer piping to increase the disc opening with lower flows. The equalizer pipe is an open-pressure communication device that maintains equal pressure above the disc and in the piping downstream of the disc.
Depending on the valve body configuration (Y-pattern, angle, or T-pattern), the pressure drop could be close to that of a tilting disc check valve or much higher. The disc of this check valve design is stable in any open position and can be used with a wide range of flow rates.

Features for lift check valve

Compact and reasonable product structure, reliable tightness and good performance;

Simple construction and lower cost

piston type disc ,small resistance to open the valve.

Can be designed with a Damping Cylinder.

Rapid closing and flexible actions of the valve disc .

Small closing impact, water hammer is not liable to be generated.

piston check valve

Main External and Connection Dimension for lift check valve（Unit：mm）

	Main external and connection dimensions
DN	L	D	D1	D2	b	z-φd	H

15	130	96	65	45	14	4-φ14	77
20	150	105	75	55	14	4-φ14	77
25	160	115	85	65	14	4-φ14	80
32	180	135	100	78	16	4-φ18	85
40	200	145	110	85	16	4-φ18	95
50	230	160	125	100	16	4-φ18	105
65	290	180	145	120	18	4-φ18	120
80	310	195	160	135	20	8-φ18	130
100	350	215	180	155	20	8-φ18	140
125	400	245	210	185	22	8-φ18	155
150	480	280	240	210	24	8-φ23	180
200	600	335	295	265	26	12-φ23	215
250	730	405	355	320	32	12-φ25	260
300	850	460	410	375	34	12-φ25	315

15	130	95	65	45	16	4-φ14	100
20	150	105	75	55	16	4-φ14	105
25	160	115	85	65	16	4-φ14	120
32	180	135	100	78	18	4-φ18	130
40	200	145	110	85	18	4-φ18	135
50	230	160	125	100	20	4-φ18	149
65	290	180	145	120	22	8-φ18	160
80	310	195	160	135	22	8-φ18	169
100	350	230	190	160	24	8-φ23	194
125	400	270	220	188	28	8-φ25	222
150	480	300	250	218	30	8-φ25	255
200	600	360	310	278	34	12-φ25	305
250	730	425	370	332	36	12-φ30	355
300	850	485	430	390	40	16-φ30	410