Bellow Seal Stop Valve Acc. To DIN

Model

Bellow seal stop valve acc. to DIN structures characteristics

product structural features：
Bellow seal stop valve acc. to DIN is applicable to the cutting and connection of pipelines medium that are used in various industries such as petroleum  chemical industry, pharmacy, chemical fertilizer, electric power industry etc under nominal pressure of  PN 1.6～16MPaand working temperature of 29～350℃.

main structural features：
1、This product has logical structure, reliable seal, excellent performance and nice design.2、The seal surface is build –up welding with Co hard alloy, which is attrition-resistant, corrosion-resistant, has good friction resistant and long life.3、The stem quenched and tempered, and its surface is treated by nit riding treatment, thus it has good corrosion resistant and friction resistant.4、It has double seal capability, thus is more reliable.5、The stem may show the position of life, thus it is clearer.6、The part material,flange and butt weld end dimension may be selected according to current operating condition and users’ requirement, so that meeting the requirements of various engineering.

Bellow seal stop valve acc. to DIN construction

NO	Part name	Material
1	Body	GS-C25 1.7363 1.4308、1.4408、1.4306、1.4301
2	Disc	ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、F316、F321、F304L、F316L
3	Pin	ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、F316、F321、F304L、F316L
4	Bellow assemble	1Cr18Ni9Ti、304、316
5	Stem	ASTM A182-Gr.F6a ASTM A182-F22 ASTM A182-F304、F316、F321、F304L、F316L
6	Bonnet	GS-C25 1.7363、1.4308、1.4408、1.4306、1.4301
7	Packing	Flexible graphite、PTFE
8	Gland	GS-C25 1.7363、1.4308、1.4408、1.4306、1.4301
9	Guide piece	25、45、304、316
10	Yoke nut	ZQA19-4
11	Hand wheel	WCB、QT400-18
12	Bolt	ASTM A193-B7、A193-B8、A193-B8M
13	Nut	ASTM A194-2H、A194 -8、A194-8M
14	Gasket	Flexible graphite + stainless steel、PTFE

Bellow seal eel pilot globe valve operation principle sketchTop of page Bellow seal stop valve acc. to DIN operation principleTop of page

1.Normal close :disc metal to metal seal to the seat, form a metal to metal seal, toting stationary seal.
2.Pilot state: Torque of above DN200 glove valve is relatively large, pilot state performance: first open the valve, close the drain velidt make the toque small, when operate the valve.
3.On-state: when dual disc is on-state, valve is shorten the time of einptging,

Bellow seal stop valve acc. to DIN operation principleTop of page Bellow seal stop valve acc. to DIN operation principleTop of page

1.Normal close: disc metal to metal seal to the seat, forms a metal to metal seal totally stationary seal.
2.Throttle state: disc leave the seat, paro bala of disc has not been emptied completely, activate and throttle the fluid, meanwhile can sweep dusty on the seat, protect seat, extend valve life expectancy .
3.On-state: when disc is on-state, valve is under emptying, resistance of fluid reduces, shorten the of emptying enhance the effect of emptying.

Bellow seal stop valve acc. to DIN operation principleTop of page

When used as a throttle valve, it presents a notable action of flow adjustment. The flow performance curvet a small flow adjustment is gentle (a gentle curve can also be designed for a big flow adjustment)so as to make the flow control easily.

Bellow seal stop valve acc. to DIN technical specificationTop of page

Structural formation	BB-BG-OS & Y
Driving manner	Hand-operated
	Electric-actuated
Design standard	DIN3356
Face to face	DIN3202
Flange ends	DIN2543-2545
Test & inspection	DIN3230

NOTE:The size of serial, valve connecting flange can be design according to customers requirement.

Bellow seal stop valve acc. to DIN products performance specificationTop of page

Nominal pressure(MPa)	Shell test(MPa)	Sealing test(MPa)	Suitable temp(℃)	Suitable medium
1.6	2.4	1.76	≤350℃	Water, oil & gas
2.5	3.75	2.75
4.0	6.0	4.4
6.4	9.6	7.04

Bellow seal stop valve acc. to DIN external and connection dimensionsTop of page

Model	WJ41H(F)-16
Pressure	PN16
size	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
L	130	150	160	180	200	230	290	310	350	400	480	600	730	850	980
H	195	200	220	225	235	250	260	265	370	400	515	550	600	630	680
W	130	130	130	130	150	150	180	180	200	200	400	450	450	500	500
Weight(kg)	4	4.5	5	7	9	12.5	18	23	41	54	90	160	260	410	610

Model	WJ41H(F)-25
Pressure	PN25
size	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
L	130	150	160	180	200	230	290	310	350	400	480	600	730	850	980
H	195	200	220	225	235	250	260	265	370	400	515	550	600	630	680
W	130	130	130	130	150	150	180	180	200	200	400	450	450	500	500
Weight(kg)	4	4.5	5	7.5	9.5	13	19	24	43	57	95	168	300	510	680

Model	WJ41H(F)-40
Pressure	PN40
size	15	20	25	32	40	50	65	80	100	125	150	200	250	300	350
L	130	150	160	180	200	230	290	310	350	400	480	600	730	850	980
H	195	200	220	225	235	250	260	265	370	400	515	550	600	630	680
W	130	130	130	130	150	150	180	180	200	200	400	450	450	500	500
Weight(kg)	4	4.5	5	8	10	13.5	20	25	45	60	98	171	340	580	780

Bellow seal stop valve acc. to DIN ralated productsTop of page

• Bellow seal stop valve acc. to DIN
• Y-type bellow seal stop valve acc. to DIN
• Right angle bellow stop valve acc. to DIN
• Bellow seal Stop valve acc. to ANSI
• Bellow seal globe valve
• Bellow seal gate valve acc. to ANSI
• Bellow seal gate valve
• Forged bellow seal globe valve
• Threaded bellow seal globe valve
• Lift check valve acc. to DIN
• Y-type strainer acc. to DIN

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