GTL-H11H H61H Forged Steel Check Valves

Forged steel check valves are available in three bonnet designs. The first is bolted valve cover, according to this design design of the valve, the valve body and the valve cover with bolt nut connection, winding gasket (316 clip flexible graphite manufacturing) sealed. Customers with special requirements can also use metal ring connection. The second design form is a welded valve cover, according to this design form of the valve, the valve body and the valve cover connected by thread, full welding seal. Penetration welding can also be used when customers have special requirements. The third is the pressure self-tight valve cover, according to this design form of valve design, the valve body and the valve cover connected with thread, internal pressure self-tight ring seal.

Check valves come in three different designs: lift check, ball check and swing check.

DETAILS

Internal thread forged steel check valve 800LB standard material list

Item	Name of parts	CS to ASTM	AS to ASTM	SS to ASTM
Item	Name of parts	A105	F22	F304（L）	F316（L）
1	Body	A105	A182F22	A182F304（L）	A182F316（L）
2	Disc	A276420	A276304	A276304（L）	A276316（L）
3	Sealing nut	316 with Graphite		316with PTFE
4	Sealing Ring	A105	A182F22	A182F304（L）	A193 B8（M）
5	Fixing nut	SS
6	Lift bolt	A193B7	A193B16	A193B8（M）	A193B8（M）
Suitable medium		Water, steam, oil, etc	Water, steam, oil, etc	Nitric acid, acetic acid, etc
Suitable temperature		—29℃～425℃	—29℃～550℃	—29℃～200℃

Forged steel check valves with internal thread -- Dimensions (MM) and weight (KG)

NPS	Reduced diameter	3/8”	1/2”	3/4”	1”	11/4”	11/2”	2”
NPS	Full diameter		3/8”	1/2”	3/4”	1”	11/4”	11/2”	2”
L		79	79	92	111	120	152	172	200
W		61	61	65	79	95	103	118	132
Weight	Bolt type	1.4	1.2	1.5	3.1	3.9	5.6	8.9	12.5
Weight	Welded type	1.1	1.0	1.2	2.9	3.3	4.9	8.1	10.9

Internal thread forged steel check valve 900LB to 1500LB standard material list

Item	Name of parts	CS to ASTM	AS to ASTM	SS to ASTM
Item	Name of parts	A105	F22	F304（L）	F316（L）
1	Body	A105	A182F22	A182F304（L）	A182F316（L）
2	Disc	A276420	A276304	A276304（L）	A276316（L）
3	Sealing nut	316 with Graphite		316 with PTFE
4	Sealing Ring	A105	A182F22	A182F304（L）	A193 B8（M）
5	Fixing nut	SS
6	Lift bolt	A193B7	A193B16	A193B8（M）	A193B8（M）
7	Ball	A182F304	A182F304	A182F304	A182F304
Suitable medium		Water, steam, oil, etc	Water, steam, oil, etc	Nitric acid, acetic acid, etc
Suitable temperature		—29℃～425℃	—29℃～550℃	—29℃～200℃

Forged steel check valves with internal thread -- Dimensions (MM) and weight (KG)

NPS	Reduced diameter	3/8”	1/2”	3/4”	1”	11/4”	11/2”	2”
NPS	Full diameter		3/8”	1/2”	3/4”	1”	11/4”	11/2”	2”
L		92	111	111	120	152	172	200	220
W		65	79	79	97	104	120	139	215
Weight	Bolt type	1.6	3.4	3.3	5.5	6.0	9.2	12.9	16.2
Weight	Welded type	1.3	3.2	3.1	4.8	5.4	8.5	11.2	14.3

Internal thread forged steel check valve 800LB、900LB～1500LB standard material list

Item	Name of parts	CS to ASTM	AS to ASTM	SS to ASTM
Item	Name of parts	A105	F22	F304（L）	F316（L）
1	Body	A105	A182F22	A182F304（L）	A182F316（L）
2	Seat	A276410	A276304	A276F304（L）	A276F316（L）
3	Disc	A276420	A276304	A276F304（L）	A27F316（L）
4	Nuts	A1942H	A1944	A1948	A1948M
5	Rocker	A105	A182F22	A182F304（L）	A182F316（L）
6	Gaskets	316 with Graphite		316 with PTFE
7	Bonnet	A105	A182F22	A182F304（L）	A182 F316（L）
8	Bolt	A193B7	A193B16	A193B8（M）	A193B8（M）
9	Pin	a276420		A182F304	A182F316
Suitable medium		Water, steam, oil, etc	Water, steam, oil, etc	Nitric acid, acetic acid, etc
Suitable temperature		—29℃～425℃	—29℃～550℃	—29℃～200℃

Forged steel check valves with internal thread -- Dimensions (MM) and weight (KG)

NPS		3/8”	1/2”	3/4”	1”	11/4"	11/2"	2"
L	800LB	79	79	92	111	120	120	140
L	900LB～1500LB	92	111	111	120	120	140	178
W	800LB	61	61	78	84	101	120	133
W	900LB～1500LB	79	79	79	97	105	120	140
Weight	800LB	1.1	1.0	1.9	3.9	4.5	7.3	10.0
Weight	900LB～1500LB	3.1	3.0	3.6	4.3	6.1	8.8	12.6

Self-sealing swing check valve 900LB to 2500LB standard material list

Item	Name of parts	CS TO ASTM	AS TO ASTM	SS TO ASTM
Item	Name of parts	A105	F22	F304（L）	F316（L）
1	Seat	A276410	A276304	A276304（L）	A276316（L）
2	Pin	A276420		A182F304	A182F316
3	Sealing Ring	A276304L			A276316L
4	Sealing nut	A105	A182F304	A182F304（L）	A182F316（L）
5	Body	A105	A182F22	A182F304（L）	A182F316（L）
6	Bonnet	A105	A182F22	A182F304（L）	A182F316（L）
7	Lift nut	A1942H	A1944	A1948	A1948M
8	Pendant collet	A276420	A182F304		A182F316
9	Drawbridge	A193B7	A193B16	A193B8	A193B8M
10	Rocker	A105	A182F22	A182F304（L）	A182F316（L）
11	Disc	A276410	F304	A182F304（L）	F316（L）
12	Nut	A1942H	A1944	A1948	A1948M
Suitable medium		Water, steam, oil, etc	Water, steam, oil, etc	Nitric acid, acetic acid, etc
Suitable temperature		—29℃～425℃	—29℃～550℃	—29℃～200℃

Self-sealing swing check valve dimensions (MM) and weight (KG)

NPS		1/2”	3/4”	1”	11/4"	11/2"	2"
L	900LB～1500LB	140	140	140	178	178	216
L	2500lb	186	186	186	232	232	279
H		117	117	117	152	152	195
Weight	900LB～1500LB	8.2	7.8	7.7	19.8	19.2	21.3
Weight	2500lb	10.0	9.6	9.4	21.5

Self sealing lifting check valve 900LB ~ 2500LB standard material list

Item	Name of parts	CS to ASTM	AS to ASTM	SS to ASTM
Item	Name of parts	A105	F22	F304（L）	F316（L）
1	Body	A105	A182F22	A182F304（L）	A182F316（L）
2	Disc	A276 420	A276304	A276304（L）	A276316（L）
3	Sealing nut	A105+STL	F22+STL	A182 F304（L）	F316（L）
4	Sealing ring	A276 304L	A276 304L	A182F304（L）	A276 316L
5	Fixing nut	A1942H	A1944	A1948	A194 8M
6	Lift bolt	A1942H	A1944	A1948	A194 8M
Suitable medium		Water, steam, oil, etc	Water, steam, oil, etc	Nitric acid, acetic acid, etc
Suitable temperature		—29℃～425℃	—29℃～550℃	—29℃～200℃

Self-sealing lifting check valve dimensions (MM) and weight (KG)

NPS		1/2"	3/4"	1"	1/4"	11/2"	2"
L	900LB～1500LB	140	140	140	178	178	216
L	2500LB	186	186	186	232	232	279
H		117	117	117	152	152	195
Weight	900LB～1500LB	7.5	7.0	6.8	18.5	18.1	20.3
Weight	2500LB	9.0	7.6	8.4	19.5	20.1	21.8