ZCR Gas emergency shut-off solenoid valveDetailed product description：

ZCR gas emergency shut-off valve is a normally open pulse triggered electromagnetic valve with accident self-locking and manual reset functions.
The ZCR gas emergency shut-off valve adopts a pilot operated valve disc, which is easy to open even when the pressure reaches 6 bar. The diameter is larger than DN125, and a lever handle is used to achieve the purpose of easy and fast opening and closing of the valve. The valve is in a normally open state during daily operation, and the solenoid valve coil is in a power-off state, without consuming electrical energy. When an accident occurs, the valve coil is instantly energized, triggering the valve to quickly close and enter a self-locking state. At this point, even if the power is removed, the valve remains in a self-locking closed state and will not automatically reopen. After the staff have dealt with the accident, the valve will be manually reopened to restore gas supply.

According to customer requirements, normally closed emergency shut-off valves can also be provided for power-off closure.
ZCR gas emergency shut-off valve has excellent technical performance, low load loss, and high reliability. Suitable for combustible gases such as coal gas, natural gas, and liquefied petroleum gas, widely used in gas supply network systems, gas thermal energy factory workshops, gas boiler rooms, and residential safety facilities.
The ZCR series gas emergency shut-off valve is a new type of safety supporting device for gas pipeline engineering, mainly used in the following situations:
Connect with the extreme temperature (pressure) safety controller of the thermal equipment. When the temperature or pressure at the detection point inside the device exceeds the set limit value, the gas supply valve will automatically and quickly close, stopping the supply of fuel. ZCR gas emergency shut-off valves are installed in the gas supply network of cities or factories, which can be centrally controlled in the central control room and remotely controlled to urgently shut down the pipeline gas supply at the accident site. Connect with the central fire alarm system of high-rise buildings. When a fire breaks out in Daxia, the gas supply inside the building is automatically cut off to prevent gas explosions. Connect with combustible gas leak monitoring instruments. When the instrument detects a combustible gas leak, it automatically and quickly closes the main gas supply valve, cuts off the gas supply, and promptly prevents the occurrence of malignant accidents.

Technical parameters of ZCR gas emergency shut-off valve

Protection Rating	CEI IP65/IP67
Explosion-proof rating	Eexm ⅡT4/Eexm Ⅱ T5
sealing material	NBR rubber
Valve body material	Brass, stainless steel, carbon steel
Quality Certification	ISO9001
Applicable Medium	Gas, natural gas, liquefied gas

Valve specifications	DN15～DN350
work pressure	0.5bar ～6bar
Closing Time	Less than 1 second
Operating Temperature	-15℃～+60℃
Working Voltage	Communication: AC24V or 220V DC: DC12V/8.5W

Main component materials of ZCR gas emergency shut-off valve

Part Name	Material
	1/2 "-1" thread	DN25-DN350 (flange)
valve body	Brass	Carbon steel (304 stainless steel)
Self-locking body	Brass (aluminum alloy)	Brass (aluminum alloy)
valve stem	stainless steel	stainless steel
Sealed River	NBR rubber

Installation diagram of ZCR gas emergency shut-off valve

Valve specifications	Installation Specifications
DN15-DN100	Sure (YES)	Sure (YES)
DN125-350	Sure (YES)	Not allowed (NO)	Not allowed (NO)
Installation legend

ZCR Gas Emergency Cut off Valve Specification and Installation Size Table
Unit: mm

Specification (DN)	L (long)	H (high)	Connection Method
fifteen	sixty-eight	one hundred and twenty	thread
twenty	seventy-two	one hundred and twenty-eight
twenty-five	one hundred	one hundred and sixty
twenty-five	one hundred and sixty	one hundred and eighty	law orchid ally connect
thirty-two	one hundred and eighty	two hundred
forty	two hundred	two hundred
fifty	two hundred and thirty	two hundred and twenty
sixty-five	two hundred and ninety	two hundred and fifty-five
eighty	three hundred and ten	three hundred and twenty
one hundred	three hundred and fifty	three hundred and eighty
one hundred and twenty-five	four hundred	four hundred and five
one hundred and fifty	four hundred and eighty	four hundred and fifty-eight
two hundred	five hundred	five hundred and thirty
two hundred and fifty	six hundred	six hundred
three hundred	seven hundred	six hundred and fifty
three hundred and fifty	eight hundred	seven hundred and fifty

Please read this manual carefully before use. When storing, all external passages of this valve should be sealed with plugs or cover plates, and stored in a dry and ventilated room. Long term storage should be regularly inspected to eliminate dirt, and anti rust oil should be applied to the processing surface to prevent rusting. This valve must be used correctly. Any damage caused by failure to follow our factory's instructions will be the sole responsibility. Before installation, the valve should be thoroughly cleaned. The valve adopts the principle of check valve and can only cut off in one direction. During installation, attention must be paid to the valve markings, and the end to be protected should be used as the valve inlet. Tighten all threaded connections. Orders must specify the flange sealing surface form and working pressure.