RQJ//F-QZQS* series gas safety shut-off valve

The RQJ/*/*F-QZQS series gas safety shut-off valves are used in gas transmission and distribution systems. When the pressure of the pipeline controlled by the shut-off valve is higher or lower than the set shut-off pressure, the RQJ safety shut-off valve can urgently cut off the gas flow in the pipeline to protect downstream equipment. Applicable media: natural gas, artificial coal gas, liquefied petroleum gas, and other non-corrosive gases.

Commodity name： RQJ/*/*F-QZQS* series gas safety shut-off valve

Classification

Contact Information

Key Words

Product Overview

The RQJ/*/*F-QZQS* series gas safety shut-off valves are used in gas transmission and distribution systems. When the pressure of the pipeline controlled by the shut-off valve is higher or lower than the set shut-off pressure, the RQJ safety shut-off valve can urgently cut off the gas flow in the pipeline to protect downstream equipment.
Applicable media: natural gas, artificial coal gas, liquefied petroleum gas, and other non-corrosive gases.

Technical Parameters

Maximum Allowable Pressure	5.0MPa	Connection Type	Flange connection DN25, DN50, DN80, DN100
Inlet Pressure Range	P1: ≤5.0MPa	Flange Rating	--- PN16, PN25, PN40 (compliant with: HG20592-2009, raised face) --- ANSI150 RF, ANSI 300 RF (compliant with: HG20615-2009, raised face)
Overpressure Shut-off Setting Range	0.003～4.0MPa	Signal Pipe Interface	NPT3/8”
Shut-off Accuracy	Up to AG2.5	Working Temperature	-20℃~60℃
Response Time	<=1 second

Dimensions

通径	尺寸（mm）	压力等级
通径	尺寸（mm）	PN16	PN25/PN	ANSI 150 RF	ANSI 300 RF
DN50	A	254	267	254	267
	B	83	83	75	83
	C	150	150	150	150
DN80	A	298	317	298	317
	B	100	100	95	105
	C	174	174	174	174
DN100	A	352	368	352	368
	B	110	118	115	128
	C	189	189	189	189

recommend products

Straight pipe section of the flow meter

The straight pipe sections installed before and after the flow meter can ensure that the fluid flow state in the pipeline is uniform, which does not directly affect the measurement accuracy of the flow meter, achieving good measurement results.

Quickly open the blind plate.

The quick-opening blind plate is a fixed quick-opening device set at the pipe opening for cleaning, unblocking pipelines, and inspecting and clearing containers.

Filters

过滤器

RQJ/*/* F-QZFS* series axial flow shut-off valve

The RQJ/*/*F-QZFS series gas safety shut-off valves are axial flow structure safety shut-off valves. This series of products has a flow path direction that is consistent with the pipeline gas flow direction, featuring advantages such as high flow capacity, high precision, good sealing performance, and fast response speed. It can achieve overpressure and low-pressure protection functions. Applicable media: natural gas, artificial coal gas, liquefied petroleum gas, and other non-corrosive gases.

Free access to more customized information

Note: Please leave your contact information and our professionals will contact you as soon as possible!