ZCLH Pneumatic Piston Cut off ValveDetailed product description：

ZCLH Pneumatic Piston Cut off Valve

Product Features
The piston mechanism has a large torque and multiple structures for rapid cutting
Spray painting process with exquisite appearance, super large circulation and reliable action

Product Overview
The pneumatic piston type cut-off valve receives signals from the regulating instrument and controls the cut-off, connection, or switching of fluid flow channels in the process pipeline. This product has the advantages of high operating force, innovative valve body design, low flow resistance, high rated flow coefficient, large allowable pressure difference, and excellent sealing performance. Therefore, it is widely used in automatic and remote control systems for production processes in industrial sectors such as petroleum, chemical, metallurgical, power, and textile.
The pneumatic piston type cut-off valve consists of two parts: a pneumatic piston type actuator and a straight stroke adjustment mechanism, connected by a bracket in the middle. According to the type of regulating mechanism, pneumatic piston type cut-off valves can be divided into three types: straight through single seat cut-off valves (ZSQP type), straight through sleeve cut-off valves (ZSQM type), and two position three-way cut-off valves (ZSQN type). There are two types of pneumatic piston actuators: single acting (spring reset) and double acting (double intake). Adopting a single acting actuator, the overall operation mode of the machine can be divided into air closed (horizontal pipeline connection) and air open (horizontal pipeline disconnection). Pneumatic piston shut-off valves have two sealing forms: hard seal and soft seal, which are suitable for different temperatures and pressures.
When the signal pressure is zero, the valve core is in its initial state (normally open or normally closed) due to the preload force of the spring (single acting only). When the actuator receives a signal pressure (0.4-0.6MPa), thrust is generated on the piston, compressing the spring and driving the push rod, valve body, and valve core to move to the limit position, causing the valve to fully open or close. To achieve control over the connection, disconnection, or switching between pipelines for the medium inside the pipeline. Equipped with a two position three-way solenoid valve, the piston type cut-off valve control is more convenient and simple.

Main technical parameters

Nominal diameter DN (mm)			twenty	twenty-five	thirty-two	forty	fifty	sixty-five	eighty	one hundred
Rated flow coefficient Kv			seven	eleven	twenty	thirty	forty-eight	seventy-five	one hundred and twenty	one hundred and ninety
Rated stroke (mm)			eight			twelve		twenty		twenty-five
Cylinder diameter (mm)			seventy-five			one hundred		one hundred and fifty
Allowable leakage amount	Hard seal (1/h)		Single seat, three-way: 1.2X10-7X valve rated capacity Sleeve: 5X10-6X valve rated capacity
	soft seal		Grade VI
Working temperature (℃)			-20 ～ 200 -40 ～ 450
Nominal pressure PN (MPa)			1.6 4.0 6.4
Allow pressure difference (MPa)	ZSQP	single-acting	one point one six	zero point six six	zero point three eight	zero point six	zero point three nine	zero point four seven	zero point three one	zero point two zero
		double-acting	six point four	five	two point eight	three point three	two point one three	two point seven one	one point seven five	one point one one
	ZSQM	single-acting	Nominal Pressure
		double-acting
	ZSQN	single-acting	zero point eight nine	zero point five seven	zero point three five	zero point five six	zero point three six	zero point four five	zero point three zero	zero point two zero
		double-acting	five point two	three point two two	two point zero three	two point two seven	one point four six	two	one point three two	zero point eight five
Signal pressure (kPa)			0 or 400-600

Dimensions and weight

Nominal diameter DN	L	A	H	L 1	H 1	A 1	Weight (Kg)	Internal thread of signal connector
twenty	one hundred and fifty	one hundred and thirty	two hundred and twenty	eighty	one hundred and fifteen	one hundred	ten	M10X1
twenty-five	one hundred and sixty	one hundred and thirty	two hundred and twenty	eighty	one hundred and twenty	one hundred	twelve
thirty-two	one hundred and eighty	one hundred and fifty	two hundred and thirty-five	eighty	one hundred and thirty	one hundred	fifteen
forty	two hundred	one hundred and fifty	two hundred and thirty-five	ninety-five	one hundred and thirty-eight	one hundred and twenty	eighteen
fifty	two hundred and thirty	one hundred and fifty	two hundred and forty	ninety-five	one hundred and fifty-five	one hundred and twenty	twenty-five
sixty-five	two hundred and ninety	two hundred and eighty	two hundred and fifty	one hundred and five	one hundred and seventy-eight	one hundred and sixty	thirty
eighty	three hundred and ten	two hundred and eighty	two hundred and sixty	one hundred and five	two hundred and seven	one hundred and sixty	forty
one hundred	three hundred and fifty	two hundred and eighty	two hundred and sixty-five	one hundred and five	two hundred and twenty-two	one hundred and sixty	sixty

Connection Standard
Flange standard: Cast iron flange GB4216-84 Cast steel flange GB9113-88, JB/T79-94
·Flange sealing surface type: PN16 is convex PN40, 64 is concave convex, and the valve body is concave
·Structural length: GB12221-89
·Execution mechanism signal interface: M10X1
*The valve body flange and flange end face distance can be manufactured according to the standards specified by the user.
For example, ANSI, JIS, DIN and other standards

Ordering Instructions
1. Product model and name
2. nominal diameter DN (mm)
3. Nominal pressure
4. Traffic characteristics
5. Valve body material and sealing requirements
6. Rated flow coefficient
7. Type of medium and temperature range
8. Pressure difference before and after the valve
9. Gas source pressure and control method
10. Other special requirements