J41H, J41W American standard flange stop valve detailed introduction:

Product Name	J41H, J41W American Standard Flange Stop Valve
Product Model	J41H、J41W
Nominal diameter	DN15-400
Pressure Range	150Lb-2500LB
Valve body material	Cast steel, stainless steel

Product Overview

J41H, J41W American standard flange stop valves are suitable for cutting off or connecting pipeline media in various working conditions such as petroleum, chemical, pharmaceutical, fertilizer, and power industries with nominal pressures of 150-2500LB and working temperatures of -29 to 550°C. The drive modes include manual, gear drive, electric, and pneumatic.

Structural features:

1. Streamlined, rising stem with bracket

2. Middle flange bolt connection

3. Loose-fit connection disc

4. Lifting stem and handwheel

5. Bracket and valve cover integrated

6. Bevel gear operation option

7. Standard flange connection

Product Specifications:

Product Specifications	Design Specifications	Structure length	Connection flange	Test and Inspection	Pressure-Temperature	Product Identification	Supply Specifications
	ASME B16.34	ANSIB 16.10	ANSIB 16.5	API598	ASME B 16.34	MSS SP-25	ASME B16.34
	BS 5160						BS 5160

Main design criteria:

Design and Manufacturing	Structure length	Flange size	Butt welding connection size	Pressure-Temperature	Test-Inspection
ANSI B16.34 BS1873	ANSI B16.10	ANSI B16.5	ANSI B16.25	ANSI B16.34	API 598

Pressure test:

Nominal pressure PN(Lb)	Strength test		Water tightness test		Airtightness test
Nominal pressure PN(Lb)	MPa	Lbf/in2	MPa	Lbf/in2	MPa	Lbf/in2
150	3.0	430	2.2	315	0.4-0.7	60-100
300	7.7	1110	5.7	815
600	15.3	2220	11.3	1630
900	23.0	3330	17.0	2445
1500	38.4	5560	28.2	4080
2500	64.0	9255	47.0	6790

Main parts materials and performance:

Valve body, valve cover	Valve stem	Sealing surface	Gasket (ring)	filler	Operating temperature	Applicable media
WCB	2Cr13	13Cr STL Wood Body Material With Body Material Nylon	Enhanced Flexible Graphite 1Cr13/Flexible Graphite SFB -2 08 Soft Steal F304 F316 F304L F316L	Flexible Graphite Enhanced Flexible Graphite SFB/260 SFP/260 PTFE	≤425	Water , Steam , Petroleum Products
WC1	38CrMoAl 25Cr2MoV				≤425
WC6					≤540
WC9					≤570
C5 C12					≤540
CF8	F304				≤200	Nitric acid , acetic acid, urea
CF8M	F316
CF3	F304L
CF3M	F316L

Product structure diagram:

Longgong Valve

150Lb Main Dimensions and Weight:

DN		150Lb Raised Face Flange (RF) Main Dimensions (mm)								weight
mm	in	L	D	D1	D2	b	n-φd	H	D0
15	1/2	108	89	60.5	35	11.2	4-16	241	100	6.9
20	3/4	117	98	69.9	43	12.7	4-16	241	100	9.8
25	1	127	108	79.2	51	14.2	4-16	242	125	13.5
32	11/4	140	117	89	63	16	4-16	280	160	19.5
40	11/2	165	127	98.6	73	17.5	4-16	286	160	28.5
50	2	203	152	120.7	92	19	4-19	368	200	18
65	21/2	216	178	139.7	105	22.4	4-19	387	200	30
80	3	241	190	152.4	127	24	4-19	411	250	41
100	4	292	229	190.5	157	24	4-19	454	250	64
125	5	356	254	216.0	186	24	8-22.5	455	350	86
150	6	406	279	241.3	216	25.4	8-22.5	541	350	113
200	8	495	343	298.5	270	28.4	8-22.5	651	450	178
250	10	622	406	362.0	324	30.2	12-25.4	800	450	270
300	12	698	483	431.8	381	32	12-25.4	1231	600	350
350	14	787	533	476.3	413	35	12-29	1450	600	460
400	16	914	597	539.8	470	36.6	26-29	1645	600	590

300Lb main dimensions and weight:

DN		300Lb Raised Face Flange (RF) Main Dimensions (mm)								weight
15	1/2	152	95	66.5	35	14.2	4-16	241	140	7.7
20	3/4	178	117	82.5	43	16	4-19	241	140	11.3
25	1	203	123	89	51	17.5	4-19	283	160	16.8
32	11/4	216	133	98.5	63	19	4-19	320	200	21.2
40	11/2	229	155	114.3	73	20.6	4-22.5	322	200	32.6
50	2	267	165	127	92	22.4	8-19	399	200	25
65	21/2	292	190	149.4	105	25.4	8-22.5	438	250	30
80	3	318	210	168.1	127	28.4	8-22.5	464	280	35
100	4	356	254	200.2	157	31.8	8-22.5	565	350	56
125	5	400	279	235	186	35	8-22.5	614	350	96
150	6	444	318	269.7	216	36.6	12-25.4	717	400	120
200	8	559	381	330.2	270	41.2	12-25.4	930	500	212
250	10	622	444	387.4	324	47.8	16-28.5	1012	550	330
300	12	711	521	450.8	381	50.8	16-32	1231	600	472
350	14	762	584	514.4	413	54	20-32	1450	600	715
400	16	864	648	571.5	470	57.2	20-35	1645	600	920

600Lb main dimensions and weight:

DN		600Lb Raised Face Flange (RF) Main Dimensions (mm)								weight
mm	in	L	D	D1	D2	b	n-φd	H	D0
15	1/2	165	95	66.5	35	14.5	4-16	285	100	7.8
20	3/4	190	117	82.5	43	16	4-19	285	125	12.5
25	1	216	124	89	51	17.5	4-19	313	160	17.5
32	11/4	229	133	98.5	63	21	4-19	328	160	23.5
40	11/2	241	156	114.3	73	22.5	4-22.5	365	180	38.5
50	2	292	165	127	92	33	8-19	444	200	35
65	21/2	330	190	149.4	105	36	8-22.5	483	250	50
80	3	356	210	168.1	127	39	8-22.5	533	250	60
100	4	432	273	216	157	45	8-25.4	622	350	110
125	5	508	330	266.7	186	52	8-28.5	750	350	200
150	6	559	356	292.1	216	55	12-28.5	800	450	230
200	8	660	419	349.3	270	63	12-32	927	500	410
250	10	787	508	431.8	324	71	16-35	1257	600	625
300	12	838	559	489	381	74	20-35	1468	680	860