Cast steel globe valve

The opening and closing component of a cast steel globe valve is a cylindrical valve disc, with a flat or conical sealing surface. The valve disc moves in a straight line along the centerline of the fluid. The national standard globe valve is only suitable for fully open and fully closed, and is generally not used to regulate flow. When customized, it is allowed to be adjusted and throttled. Cut or connect the pipeline medium on various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, and power industries with a nominal pressure of 1.6MPa to 16.0MPa and a working temperature of -29 to 550 ℃. The driving methods include manual, gear transmission, electric, pneumatic, etc.

Characteristics of cast steel globe valves

Simple structure, convenient for manufacturing and maintenance.
Small work schedule and short opening and closing time.
Good sealing performance, low friction between sealing surfaces, long service life.

Execution standard for cast steel globe valves:
Design Specification: GB/T 12235
Structural length: GB/T 12221
Flange connection: JB/T 79
Testing and Inspection: JB/T 9002
Product identification: GB/T 12220
Supply specification: JB/T 7928

Performance parameters of cast steel globe valves

Model		J41H-16C～160C	J41Y-16C～160C	J41W-16P～160P
Working pressure（MPa）		1.6～16.0
Applicable temperature（℃）		≤425		≤150
Applicable medium		Water,steam,oil		Weakly corrosive medium
Material	Valve body,valve cover	Carbon steel		Chromium nickel titanium stainless steel
	Valve stem	Chromium stainless steel		Chromium nickel titanium stainless steel
	Sealing surface	Surfacing iron base alloys	Hard base alloy overlay welding	Body material
	Filler	Asbestos graphite, flexible graphite, PTFE

Pressure test for cast steel globe valve (MPa)

Nominal pressure	1.6	2.5	4.0	6.4	10.0	16.0
Strength test	2.4	3.8	6.0	9.6	15.0	24.0
Water seal test	1.8	2.8	4.4	7.4	11.0	18.0
Upper seal test	1.8	2.8	4.4	7.04	11.0	18.0
Gas seal test	0.4-0.7

Materials and Properties of Main Parts of Cast Steel Globe Valves

Body cover plate	Valve stem	Sealing surface	Gasket(ring)	Filler	Working temperature℃	Applicable medium
WCB	2Cr13	13Cr STL Body material nylon	Enhanced flexible graphite 1Crl3／flexible graphite 08 mild steel 0Cr18Ni9Ti OCr18Ni12Mo2Ti	Flexible graphite Enhanced flexible graphite SFB-260 SFP-260	≤425	Water,steam,oil
WC1	38CrMoAI 25Cr2MoV				≤450
WC6					≤540
WC9					≤570
ZGCr5Mo					≤540
ZG1Cr18Ni9Ti	1Cr18Ni9Ti				≤200	Nitric Acid
ZGCr18Ni12Mo2Ti	1C18Ni12Mo2Ti				≤200	Acetic acid

Cast steel globe valve PN l.6MPa specification main dimensions

1.6MPa	DN	L	D	D1	D2	b	n-Φd	H	D0
Raised face flange RF J41H J41Y J41W J41F J41N 16C 16P 16R 16I	10	130	90	60	40	14	4-Φ14	198	120
	15	130	95	65	45	14	4-Φ14	218	120
	20	150	105	75	55	14	4-Φ14	258	140
	25	160	115	85	65	14	4-Φ14	275	140
	32	180	135	100	78	16	4-Φ18	280	160
	40	200	145	110	85	16	4-Φ18	330	180
	50	230	160	125	100	16	4-Φ18	350	200
	65	290	180	145	120	18	4-Φ18	370	280
	80	310	195	160	135	20	8-Φ18	400	280
	100	350	215	180	155	20	8-Φ18	415	320
	125	400	245	210	185	22	8-Φ18	460	360
	150	480	280	240	210	24	8-Φ23	510	450
	200	600	335	295	265	26	12-Φ23	710	500
	250	650	405	335	320	30	12-Φ25	786	550
	300	750	460	410	375	30	12-Φ25	925	600

Cast steel globe valve 2.5MPa specification main dimensions

2.5MPa	DN	L	D	D1	D2	b	n-Φd	H	D0
	10	130	90	60	40	16	4-Φ14	198	120
	15	130	95	65	45	16	4-Φ14	218	120
	20	150	105	75	55	16	4-Φ14	258	140
	25	160	115	85	65	16	4-Φ14	275	140
	32	180	135	100	78	18	4-Φ18	280	160
	40	200	145	110	85	18	4-Φ18	330	180
	50	230	160	125	100	20	4-Φ18	350	200
	65	290	180	145	125	22	8-Φ18	400	280
	80	310	195	160	135	22	8-Φ18	355	280
	100	350	230	190	160	24	8-Φ23	415	320
	125	400	270	220	188	28	8-Φ25	460	360
	150	480	300	250	218	30	8-Φ25	510	450
	200	600	360	310	278	34	12-Φ25	710	500
	250	622	425	370	332	36	12-Φ30	786	550
	300	698	485	430	390	40	16-Φ30	925	600

Cast steel globe valve 4.0MPa specification main dimensions

4.0MPa	DN	L	D	D1	D2	D6	b	n-Φd	H	D0
Concave - convex flange MFM J41H J41Y J41W J41N 40 40P 40R 40I	10	130	90	60	41	35	14	4-Φ14	198	120
	15	130	95	65	45	40	16	4-Φ14	233	120
	20	150	105	75	55	51	16	4-Φ14	295	140
	25	160	115	85	65	58	16	4-Φ14	285	160
	32	180	135	100	78	66	18	4-Φ18	302	160
	40	200	145	110	85	76	18	4-Φ18	355	200
	50	230	160	125	100	88	20	4-Φ18	373	200
	65	290	180	145	120	110	22	8-Φ18	408	280
	80	310	195	160	135	121	22	8-Φ18	436	280
	100	350	230	190	160	150	24	8-Φ23	480	320
	125	4001	270	220	188	176	28	8-Φ25	588	360
	150	480	300	250	218	204	30	8-Φ25	611	400
	200	600	375	320	282	260	38	12-Φ30	720	400

Cast steel globe valve 6.4MPa specification Main dimensions

6.4MPa	15	170	105	75	55	40	18	4-14Φ	195	400
Concave - convex flange MFM J41H J41Y J41W J41N 64 64P 64R 64I	20	190	125	90	68	51	20	4-Φ18	228	160
	25	210	135	100	78	58	22	4-Φ18	275	180
	32	230	150	110	82	66	24	4-Φ23	325	200
	40	260	165	125	95	76	24	4-Φ23	360	240
	50	300	175	135	105	88	26	4-Φ23	410	280
	65	340	200	160	130	110	28	8-Φ23	450	320
	80	380	210	170	140	121	30	8-Φ23	485	360
	100	430	250	200	168	150	32	8-Φ25	537	400
	125	500	295	240	202	176	36	8-Φ30	631	400
	150	550	340	280	240	204	38	8-Φ34	646	450
	200	650	405	345	300	260	44	12-Φ34	813	500