MKS HPS LPV1-25-AC Series, Operation And Maintenance Manual

Page: 13 / 52

5
HPS HPS
HPS HPS
HPS
®
Square Body LoPro Square Body LoPro
Square Body LoPro Square Body LoPro
Square Body LoPro
Seri es Seri es Seri es Seri es Serie s
4.1 Pneumatic Version
Figure 2 - Pneumatic operation
4.1.1 Pneumatic Cycling
Figure 2 illustrates the components of the pneumatic valve. From its
normally closed position, the valve is opened with the admission of
compressed air to the pneumatic cylinder through the 1/8" female NPT port
in the side of the cylinder (1).
4. Operating Principles
Actuator Cylinder 1
Piston 2
O-Ring 11
Bellows 4
Spring Bushing 5
Nosepiece 7
Seat 8
14 Flat Head Screw
15 Piston Seal
13 Stem Seals
12 Rulon Bearing
3 Spring
10 Body
9 O- Ring