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*Locators are provided for ANSI 600# to center the valve between the flange bolts For ANSI 150# the body has grooves which match the flange bolts to act as a guide
The flow acts upon the piston and compresses the springs. This unseats the piston allowing the flow media to move downstream
The flow acts upon the piston and seats the piston with the aid of the spring force.
The Seat is at an angle which prevents media from building up. As back flow occurs, the seat is flushed clean prior to contact with the piston.
The relatively small size of the valve makes it easy to install and handle. The light weight construction also makes it cost competitive.
The Port opening on the valve is a full port. This is unlike other piston check designs which have a reduced port opening. Thus, more flow is available with the Jarecki Piston Check Valve. Please note, however, some of our designs are standard port. Please specify upon your inquiry if you have a preference.
The piston is spring loaded so that the valve can be mounted vertically or horizontally. The springs are contained with minimal area exposed to the media. Guides properly locate the piston during the closed and open position. This prevents the piston from binding up inside the valve and insures a good, reliable shutoff.
The PC Series can also be provided with the following end connections:
For Flanged and Butt Weld end connections, the end-to-end length of the valve matches ANSI standards. Socket Weld and Threaded dimensions are available upon request. When the valve is ordered with any of these connections, it becomes a 3-piece valve.
