Description

These piston valves use a single spring-return air cylinder to drive pneumatic pressure and are offered as 2-way valves for open-close functions and 3-way valves for path-switching functions. 2-way valves can be provided in two types: Normally Open (NO) where the port 1-2 path is open when the air supply is off, and Normally Closed (NC) where the port 1-2 path is closed and the port 2-3 path open when the air supply is off, and the port 1-2 path is open and the port 2-3 path closed when the air supply is on.

A long-term high-quality seal is maintained under the high-temperature high-pressure environment of a tire curing press by specifying the use of a specialized fiber (carbon fiber PTFE) for the stem which connects to the valve seat of the valve body. They are also designed to allow easy maintenance, such as disassembly and assembly for parts replacement. The valves are for use in the internal or external pressure systems, water hydraulic systems, and air systems of tire curing presses.