Lift check valve

NegotiableUpdate on November 02

Model

Nature of the Manufacturer: Other

Product Category: Petroleum and natural gas chemical industry

Place of Origin: City, Province

Online Consult Contact Information

Overview

name: Lift check valveType: H41Presure: 1.0～10MPaSpecifications: DN15~DN500material: WCB CF8 CF3 CF8M CF3M

Product Details

Product description

Lift check valves refers to relying on the media itself, the flow to automatically open and close the valve, by means of the valve clack gravity and fluid pressure automatically to prevent fluid backflow valve, also known as a non-return valve, a one-way valve, a reversing valve, and back pressure valve. Check valve is an automatic valve, its main role is to prevent the media back, to prevent the pump and drive motor reversal, as well as the release of the container medium. Check valve can also be used to give the pressure may rise to more than the system pressure of the auxiliary system to provide supply pipeline.

主要连接及外形尺寸(PN25)

公称通径	主要连接及外形尺寸
	阀体连接尺寸		法兰连接尺寸
	L	H	D	D1	D2	b	f	z-Φd
15	130	100	95	65	45	16	2	4-14
20	150	105	105	75	55	16	2	4-14
25	160	120	115	85	65	16	2	4-14
32	180	130	135	100	78	18	2	4-18
40	200	135	145	110	85	18	3	4-18
50	230	149	160	125	100	20	3	4-18
80	310	169	195	160	135	22	3	8-18
100	350	194	230	190	160	24	3	8-23
150	480	255	600	250	218	30	3	8-25
200	600	305	360	310	278	34	3	12-25

主要连接及外形尺寸(PN40)

公称通径	主要连接及外形尺寸
	阀体连接尺寸		法兰连接尺寸
	L	H	D	D1	D2	D6	b	f	f1	z-Φd
15	130	100	95	65	45	40	16	2	4	4-14
20	150	105	105	75	55	51	16	2	4	4-14
25	160	120	115	85	65	58	16	2	4	4-14
32	180	130	135	100	78	66	18	2	4	4-18
40	200	135	145	110	85	76	18	3	4	4-18
50	230	149	160	125	100	88	20	3	4	4-18
80	310	169	195	160	135	121	22	3	4	8-18
100	350	194	230	190	160	150	24	3	4.5	8-23
150	480	255	300	250	218	204	30	3	4.5	8-25
200	600	305	375	320	282	260	38	3	4.5	12-30

主要连接及外形尺寸(PN64)

公称通径	主要连接及外形尺寸
	阀体连接尺寸		法兰连接尺寸
	L	H	D	D1	D2	D6	b	f	f1	z-Φd
15	130	100	105	75	55	40	18	2	4	4-14
20	150	110	125	90	68	51	20	2	4	4-18
25	160	125	135	100	78	58	22	2	4	4-18
32	180	140	150	110	82	66	24	2	4	4-23
40	200	168	165	125	95	76	24	3	4	4-23
50	230	170	175	135	105	88	26	3	4	4-23
80	310	205	210	170	140	121	30	3	4	8-23
100	350	230	250	200	168	150	32	3	4.5	8-25
150	480	265	340	280	240	204	38	3	4.5	8-34
200	600	310	405	345	300	260	44	3	4.5	12-34

Main Parts material

Material code	Valve body, valve cover	Valve clack	Swing arm	shim
C	WCB carbon steel	WCB+hard alloy or stainless steel	WCB carbon steel	Graphite+304
P	CF8(304) stainless steel	stainless steel	CF8(304) stainless steel	PTFE
R	CF8M(316)stainless steel	stainless steel	CF8M(316)stainless steel	PTFE
I	WC6 Cr Mo steel	Alloy steel + hard alloy	WC6 Cr Mo steel	Graphite+304
V	WC9 Cr Mo steel	Alloy steel + hard alloy	WC9 Cr Mo steel	Graphite+304

Other special materials, our company can also be tailored to customer needs.

Shell material	Applicable medium	Applicable temperature（℃）
Carbon steel（C type）	Water, steam, oil	≤425
Cr.mo.ti steel（P type）	Nitric acid	≤150
Cr.ni.mo.ti steel（R type）	Acetic acid	≤150
Cr.mo. steel（I type）	Water, steam, oil	≤550

nominal diameter PN（MPa）	shell（MPa）	test pressure（MPa）		up seal（MPa）
nominal diameter PN（MPa）	shell（MPa）	seal（liquid）（MPa）	seal（gas）（MPa）	up seal（MPa）
1.6	2.4	1.8	0.6	1.8
2.5	3.8	2.8	0.6	2.8
4	6	4.4	0.6	4.4
6.4	9.6	7	0.6	7

Implementation standards:
Design standard: GB/T12235
Structure length: GB/T12221
Connecting flange: JB/T79, GB/T9113, HG/T20592, HG/T20615
Experiment and test: JB/T9092, GB/T13927
Pressure - temperature: GB/T9131
Product label: GB/T12220

Storage and maintenance
1 the valve must be kept in a dry, ventilated room.
2 the storage period of the valve, the valve should be closed and fixed, both ends of the flange should be closed.
3 during the storage of the valve, the surface of the machine is easy to be removed.
4 long-term storage of the valve should be regularly checked, timely protection.
Installation and maintenance
1 the valve is installed in the horizontal pipeline
2 must be carefully checked before installation, the valve plate is marked and consistent with the requirement and condition.
3 when installing, should check the inner cavity, remove the valve flap fixing device, try to check the sealing surface of the valve flap, and clean.
4.. Lifting the valve before, should check whether it has been tightening screw ring.
5 installation should pay special attention to media flow, should make the normal flow direction of the media and the direction of the arrow on the valve body consistent.
6 when installing, tighten the connecting bolts evenly and symmetrically.