Casting Stainless Steel Bellows B.B Globe Valve

The inside of the cast stainless steel bellows B.B cut-off valve adopts a bellows structure, and the lower end of the stainless steel bellows is welded on the valve stem to prevent the process fluid from eroding the valve stem. The other end is placed between the valve body and the valve cover to form a static seal. Double seal design If the bellows fails, the stem packing will also avoid leakage. The bellows will be welded to the valve stem to maintain stable running performance and avoid the valve stem vibration caused by the valve plug vibration.

Product Details

Product Description

Feature

1. The product structure is reasonable, the sealing performance is reliable, and the shape is beautiful;

2. Sealing surface surfacing Co-based cemented carbide, wear-resistant, corrosion-resistant, anti-friction performance, long service life;

3. Stem quenching and surface nitriding treatment, good corrosion resistance and anti-friction performance;

Standard

Design specification: GB/T 12235

Structure length: GB/T 12221

Flange connection: JB/T 79

Test and inspection: JB/T 9002

Product identification: GB/T 12220

Supply specification: JB/T 7928

20170629164057_3007

Model		J41H-16C～160C	J41Y-16C～160C	J41W-16P～160P
Working pressure (MPa)		1.6~16.0
Applicable temperature (°C)		≤425		≤150
Applicable medium		Water, steam, oil		Weakly corrosive medium
Material	Valve body, bonnet	Carbon steel		Chrome nickel titanium stainless steel
	Valve stem	Chrome stainless steel		Chrome nickel titanium stainless steel
	Sealing surface	Surfacing iron-based alloy	Hardfacing hard alloy	Body material
	Packing	Asbestos graphite, flexible graphite, PTFE

Nominal diameter	Main dimensions and connection dimensions
Nominal diameter	L	D	D1	D2	b	Z-d	H	D0
J41H-16C
15	130	95	65	45	14-2	4-Φ14	170	120
20	150	105	75	55	14-2	4-Φ14	190	140
25	160	115	85	65	14-2	4-Φ14	205	160
32	180	135	100	78	16-2	4-Φ18	270	180
40	200	145	110	85	16-3	4-Φ18	310	200
50	230	160	125	100	16-3	4-Φ18	358	240
65	290	180	145	120	18-3	4-Φ18	373	240
80	310	195	160	135	20-3	8-Φ18	435	280
100	350	215	180	155	20-3	8-Φ18	500	300
125	400	245	210	185	22-3	8-Φ18	614	320
150	480	280	240	210	24-3	8-Φ23	674	360
200	600	335	295	265	26-3	12-Φ23	811	400
250	650	405	355	320	30-3	12-Φ25	969	450
300	750	460	410	375	30-3	12-Φ25	1145	580
350	850	520	470	435	34-4	16-Φ25	1280	640
400	980	580	525	485	36-4	16-Φ30	1452	640
J41H-25C
15	130	95	65	45	16-2	4-Φ14	170	120
20	150	105	75	55	16-2	4-Φ14	190	140
25	160	115	85	65	16-2	4-Φ14	205	160
32	180	135	100	78	18-2	4-Φ18	270	180
40	200	145	110	85	18-3	4-Φ18	310	200
50	230	160	125	100	20-3	4-Φ18	358	240
65	290	180	145	120	22-3	8-Φ18	373	240
80	310	195	160	135	22-3	8-Φ18	435	280
100	350	230	190	160	24-3	8-Φ23	500	300
125	400	270	220	188	28-3	8-Φ25	614	320
150	480	300	250	218	30-3	8-Φ25	674	360
200	600	360	310	278	34-3	12-Φ25	811	400
250	650	425	370	332	36-3	12-Φ30	969	450
300	750	485	430	390	40-4	16-Φ30	1145	580
350	850	550	490	448	44-4	16-Φ34	1280	640
400	980	610	550	505	48-4	16-Φ34	1452	640

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