Din Standard Bellows Seal Gate Valve

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Application
Steam, thermal oil, rank poison and strong corrupt gas and liquid medium.

Advantage
1.Bellow seal element. The key part of bellow sealed globe valves is mental bellow. It is the connection between cover and stem with automatic roll welding. The mental bellow can keep the stem part no leakage.
2.Double seal design(bellows+packing). Bellow and packing can protect against leakage and provide a excellent seal.
3. Grease nipple. It can direct lubricate the stem, nut and sleeve.
4. Ergonomic hand wheel. It provide longer service life and easier operation.

Technical specification
Design standard: DIN 3352
Face to face dimension: DIN 3202
Flanged ends: DIN 2543-2545
Test & inspection: DIN 3230

Main part materials

O.	Part name	Material
1	Body	GS-C25、1.4301、1.4401
2	Disc	GS-C25+1.4201/1.4301
3	Seat	1.4301、Stellite
4	Stem	1.4021、1.4301、1.4401
5	Bellows	1.4301、1.4401
6	Double-headed bolt	ASTM 193-B7、A193-B8
7	Nut	ASTM 194-2H、A194-8
8	Metal gasket	Asbestos+ Stainless steel
9	Nut	ASTM 194-2H、A194-8
10	Middle yoke	GS-C25、1.4301、1.4401
11	Double-headed bolt	ASTM 193-B7、A193-B8
12	Nut	ASTM 194-2H、A194-8
13	Gasket	Flexible graphite+ stainless steel
14	Cover	GS-C25、1.4301、1.4401
15	Nut	ASTM 194-2H、A194-8
16	Packing	Flexible graphite
17	Gland	GS-C25、1.4301
18	Nut	ASTM 194-2H、A194-8
19	Jack bolt	ASTM 193-B7、A193-B8
20	Stem nut	Copper alloy、D2、BL2
21	Oil cup	Assemble
22	Cap	1C45、1.4301、1.4401
23	Hand wheel	Carbon steel

Nominal Pressure		PN
Test Pressure	Strength test	1.5PN	MPa
	Sealing test	1.1PN
	Gas seal test	0.6
	--	--
Suitable temp		-196℃~600℃

PN 16
DN	Main connection size
DN	L	D	D1	D2	b	f	H	n-Φd
40	240	150	110	88	18	3	473	4-Φ18
50	250	165	125	102	20	3	524	4-Φ18
65	270	185	145	122	20	3	567	4-Φ18
80	280	200	160	138	20	3	655	8-Φ18
100	300	220	180	158	20	3	833	8-Φ18
125	325	250	210	188	22	3	908	8-Φ18
150	350	285	240	212	22	3	1006	8-Φ22
200	400	340	295	268	24	3	1423	12-Φ22
250	450	405	355	320	26	3	1708	12-Φ26
300	500	460	410	378	28	4	2117	12-Φ26
350	550	520	470	438	30	4	2400	16-Φ26
400	600	580	525	490	32	4	2707	16-Φ30
450	650	640	585	548	34	4	2834.5	20-Φ30
500	700	715	650	610	36	4	3169	20-Φ33
600	800	840	770	725	40	5	4053	20-Φ36
PN 25
40	240	150	110	88	18	3	473	4-Φ18
50	250	165	125	102	20	3	524	4-Φ18
65	270	185	145	122	22	3	567	8-Φ18
80	280	200	160	138	24	3	655	8-Φ18
100	300	235	190	162	24	3	833	8-Φ22
125	325	270	220	188	26	3	908	8-Φ26
150	350	300	250	218	28	3	1006	8-Φ26
200	400	360	310	278	30	3	1423	12-Φ26
250	450	425	370	335	32	3	1708	12-Φ30
300	500	485	430	395	34	4	2117	16-Φ30
350	550	555	490	450	38	4	2400	16-Φ33
400	600	620	550	505	40	4	2707	16-Φ36
450	650	670	600	548	42	4	2834.5	20-Φ36
500	700	730	660	566	44	4	3169	20-Φ36
600	800	845	770	670	46	5	4053	20-Φ39
PN 40
40	240	150	110	88	18	3	473	4-Φ18
50	250	165	125	102	20	3	524	4-Φ18
65	270	185	145	122	22	3	567	8-Φ18
80	280	200	160	138	24	3	655	8-Φ18
100	300	235	190	162	24	3	833	8-Φ22
125	325	270	220	188	26	3	908	8-Φ26
150	350	300	250	218	28	3	1006	8-Φ26
200	400	375	320	285	34	3	1423	12-Φ30
250	450	450	385	345	38	3	1708	12-Φ33
300	500	515	450	410	42	4	2117	16-Φ33
350	550	580	510	465	46	4	2400	16-Φ36
400	600	660	585	535	50	4	2707	16-Φ39
450	650	685	610	560	50	4	2834.5	20-Φ39
500	700	755	670	615	52	4	3169	20-Φ42
600	800	890	795	735	60	5	4053	20-Φ48

Comprehensive Solution For Steam And Heat System