Bellows stop valve

[Product Description]

The bellows shut-off valve is suitable for cutting or connecting pipeline media in pipelines under various working conditions such as petroleum, chemical, pharmaceutical, fertilizer and power industry with nominal pressure PN1.6~PN4.0MPa and working temperature -20℃~350℃.

[Structure and Use]

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

2. Sealed surface overlay welding Co-based cemented carbide, wear-resistant, corrosion-resistant, good friction resistance and long service life;

3. Valve stem modulation and surface nitriding treatment, with good anti-corrosion and anti-friction performance;

4. The right-angled German bellows shut-off valve is double sealed, and the performance is more reliable;

5. The position indication of the valve stem lifting is more intuitive;

6. Parts material, flange and butt welding number size can be reasonably selected according to the actual working conditions or user requirements to meet various engineering needs.

Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

[Technical Specifications]

Structural form	BB-BG
Driving mode	Manual
Driving mode	Pneumatic
Design standard	DIN3356
Structural length	DIN3203
Connection flange	DIN2543-2545
Testing and inspection	DIN3230

[Product Component Materials]

NO.	Name	Material
1	Valve body	GS-C25、CF8、CF3
2	Valve disc	2CR13、F304、F316
3	Shaft pin	F304、F316
4	Bellows assembly	F304、F316L
5	Valve cover	GS-C25、CF8、CF3
6	Packing material	Flexible graphite、PTFE
7	Pressure sleeve	25#、F304、F316
8	Positioning plate	25#、F304、F316
9	Valve stem nut	铜合金ZQA19-4
10	Handwheel	Carbon steel
11	And hat	25#
12	Oil cup	Brass
13	Hexagonal nut	ASTMA193 2H、A193-8、A193-8M
14	Double-ended bolt	ASTMA193 B7、A193-B8、A193-B8M
15	Gasket	Flexible graphite+stainless steel
16	Valve stem	2Cr13、F3

Product appearance and structural dimensions

Nominal Diameter	Main external dimensions and connection dimensions
Nominal Diameter	L	D	D1	D2	b	Z-d	H	D0
WJ41Y-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
WJ41Y-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