Gas storage completed valve series

Standing with a hydraulic emergency cut-off valve QDY421F - 25/40

Product Features

1, suitable for gas pipeline, a safety protection. When pipeline leak, use hand pump unloading, realizing remote control valve is closed.
When a fire, high temperature melt fusible plug, valve shut down automatically.

2, on the principle of check valve, one-way only cut off, the flow direction of medium when installation must be connected to the body logo.

3, delivery status, normally closed valve. Through the hand pump function hydraulic cylinder, the valve opens.

4, easy operation, the valve closed check fast.

Technical parameters

Technical parameters:

Nominal pressure Mpa	2.5	4.0
Shell test pressure Mpa	3.75	6.0
Seal test pressure Mpa	2.75	4.4
Suitable temperature	- 40ºC to + 50ºC
Applicable medium	Liquefied petroleum gas, natural gas, liquid nitrogen, etc
The standard of the flange	GB/T9113-2000
Manufacturing standards	JB/T9094—1999
Emergency cut-off time	10 to 30 seconds or less
Easy to melt melting temperature	75 + / - 5ºC
Oil cylinder suitable medium	Synthesis of spindle oil, transformer oil
Oil cylinder pressure Mpa	4.0 to 6.0

The major parts material

The valve body	The valve stem	The disc	spring	gasket	Oil cylinder	Sealing ring
WCB	20Cr13	ZG20Cr13	50CrVA ,1Cr18Ni9	PTFE	20 #	NBR

Standing with a hydraulic emergency cut-off valve ODY421F nominal pressure PN2.5 MPa shape size and the connection size

DN	L	D	Dl	D2	D3 convex	D4 concave	b	f	Z - phi d	H
25	160	115	85	65	57	58	16	4	4-14	262
32	180	140	100	76	65	66	18	4	4 - phi 18	245
40	200	150	110	84	75	76	18	4	4 - phi 18	321

Standing with a hydraulic emergency cut-off valve ODY421F nominal pressure PN2.5 MPa shape size and the connection size

DN	L	D	Dl	D2	D3 convex	D4 concave	b	f	Z - phi d	H
50	230	165	125	99	87	88	20	4	4 - phi 18	346
80	310	200	160	132	120	121	24	4	8 - phi 18	435
100	350	235	190	156	149	150	24	4.5	8-22	460
125	400	270	220	184	175	176	26	4.5	8 - phi 26	495

Standing with a hydraulic emergency cut-off valve ODY421F nominal pressure PN2.5 MPa shape size and the connection size

DN	L	D	Dl	D2	D3 convex	D4 concave	b	f	Z - phi d	H1	H2
150	444	300	250	211	203	204	28	4.5	8 - phi 26	590	353
200	533	360	310	274	259	260	30	4.5	12 - phi 26	695	410
250	622	425	370	330	312	313	32	4.5	12-30	735	441

Gas storage completed valve series

Standing with a hydraulic emergency cut-off valve QDY421F - 25/40

Product Features

Technical parameters

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