QDQ421F-25/40 Pneumatic Emergency Shut-off Valve

NegotiableUpdate on July 20

Model

Nature of the Manufacturer: Manufacturer

Product Category: Globe Valve

Place of Origin: ShangHai City, ShangHai Province

Online Consult Contact Information

Overview

QDQ421F-25/40 Pneumatic Emergency Shut-off ValveProduct overviewProduct model: QDQ421F-25/40Nominal diameter: DN25∽200mmNominal pressure: PN2.5~4.0MPa, JIS-10K, 20KApplicable temperature: -40∽+80℃Applicable medium: liquefied gas, natural gasAir source interface: PC1/4High temperature solution-closing temperature: 70±5℃

Product Details

QDQ421F-25/40 Pneumatic Emergency Shut-off Valve features:

QDQ421F-25/40 Pneumatic Emergency Shut-off Valve produced and sold by Baigang valve group is a kind of safety protection valve.It is installed on the liquid phase and gas phase pipeline of liquefied petroleum gas storage and irrigation station and used with air compressor (or gas storage tank), so that when a large amount of pipeline leakage occurs, pressure relief of air source or high temperature will melt the fusible plug alloy, and the valve will automatically close and stop leakage, playing a role of safety protection.This valve can also be used as a pneumatic globe valve.It can realize remote control, close quickly and open flexibly.

QDQ421F-25/40 Pneumatic Emergency Shut-off Valve performance Specifications:

Nominal pressure PN	2.5, 4.0 MPa	Cylinder pressure	≤4.0MPa
Suitable temperature T	-40 ∽ +80 ℃	Cylinder use medium
Suitable media	LPG, natural gas	Fused temperature	70 ℃ ∽ ± 5 ℃
Closing time	≤10 seconds	Cylinder opening pressure	≥4.0MPa

QDQ421F-25/40 Pneumatic Emergency Shut-off Valve Main dimensions and connection dimensions: Unit: mm

DN	L	H	H1	D	D1	D2	b	f	Z-φd
25	160	230	230	115	85	65	16	2	4-14
32	180	240	240	135	100	78	18	2	4-18
40	200	250	250	145	110	85	18	3	4-18
50	230	270	270	160	125	100	20	3	4-18
80	310	320	320	195	160	135	22	3	8-18
100	350	360	360	230	190	160	24	3	8-23
150	480	510	510	300	250	218	30	3	8-25
200	600	550	550	360	310	278	30	4	12-25