The core of the traditional style Indicator Valve is the spring-loaded needle tip. This long established design prevents the valve from being opened due to engine vibration. It also allows easy operation even at high temperature service.

Supplied c/w heat-protected handle.

Allows a reduced installation radius at limited space.

Valve opens "against engine pressure" and closes "with engine pressure".

Any movement of the valve stem due to engine vibration tends to tighten the valve stem against its seat thus eliminating the possibility of opening under operating conditions.