Pneumatic High Pressure Drain valve YST665Y

Pneumatic High Pressure drain valve YST665Y

Products > Power Station Control Valve > Pneumatic High Pressure drain valve YST665Y

Products Name: Pneumatic High Pressure drain valve YST665Y

Category: Power Station Control Valve

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Description

This is a product of the action and reaction are divided, its nominal diameter grade DN (MM) by 20~100; nominal pressure rating of PN from 150Lb (2. 0MPa) and other grades; air pressure (MPa) 0. 14-0. 4; the signal range of Pr (KPa) 20-100; 40-200; leakage almost approximate to 0 leakage of the products are available in various sizes.
Actuator, two forms of function; when the signal pressure increase, putting out the film room called positive effect, and the valve composed of air to close. When the signal pressure increases, the push rod back into the film room called the reaction, and the valve with the structure type.
Type ZMQSY pneumatic diaphragm type Y valve; the valve consists of a new series of pneumatic diaphragm actuator and Y type drain valve of two parts (Figure 1) Y type drain valve with special structure is adjusting valve body two end is welded type, suitable for piping.
The principle of:
When the signal pressure input film room, thrust, on the diaphragm compression spring, the push rod to move, to drive the valve rod, change between the spool and the valve seat circulation area, thrust until the spring reaction force and the signal pressure acting on the diaphragm to phase equilibrium, so as to achieve the purpose of automatic adjusting process parameters.
Thin film Y type drain valve specifications and technical parameters of ZMQSY series gas:
Working temperature: -445
The signal range of 20-100 40-200
The origin of pressure 0.14-0.04
Allowable leakage rate less than VI
Pipe thread M10X1 M16X1.5

Nominal diameter DN 20253240506580100
The flow coefficient of 581217294370100
Rated stroke 162540
The effective area of diaphragm 280400600
Nominal pressure 150LB (2.0MPa) --1500LB (25.0MPa)

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