The MUELLER 300 Ball
Valve is an optimized design combining a strong, reliable ball/stem
connection with other desired features, including a blow-out-proof
stem, double O-rings and a 300 psig working pressure rating. The
design offers true bi-directional (two way) flow.
MARK II ORISEAL Curb Valve has a sturdy one-piece, closed-bottom
body that differs from others designs by reducing the number of
potential leakage points. The closed bottom design minimizes exposed
moving parts. The large tee head and plug are integrally cast as
one strong piece to resist twisting and breaking. In addition, the
O-ring sealed design allows the plug to turn easily in the body,
with a minimum of torque. The top and port O-rings are fully supported
in machined grooves to provide positive sealing. All of these features
combine in the MUELLER MARK II ORISEAL Curb Valve to provide reliable
performance and long-term reliability.