September 2022

Rising stem valves provide a stem that rises or falls as the valve opens or closes. This means that the actuation system converts rotational motion into linear movement of the valve stem when it is in operation. So, unlike its non-rising counterpart, the valve stem in this design indicates the position of the valve disc. […]

The design of pressure seal valves is specifically for high-pressure applications typically in excess of 1,000 psi and are therefore normally only available in pressure classes of 600# and above. These valves are unique because as their internal pressure increases, the body-bonnet joint seal improves. This is in complete contrast to other types of valves