2 Valve Manifolds-Direct Mounting provide a direct mounting feature with the isolating valve and vent/calibration valve in a single unit. Aptek Instrumentation Pvt. Ltd offers 2 Valve Manifolds-Direct Mounting. Aptek Instrumentation Pvt. Ltd is an ISO 9001: 2008 certified company manufacturing a wide range of Instrumentation valves, tube fittings, various Instrumentationÿaccessories. The products manufactured by the company include 2,3,5 manifold Valves, Low, High Pressure Ball Valves, Instrumentation Ball Valves, Mono-flange instrumentation valves, Needle Valves, Gauge Valves, Instrumentation Tube Fittings, Instrumentation Pipe Fittings, Pressure Gauge Accessories, Thermo wells, pressure gauge, Gauge bleed valve, Gauge vent valve, Multi port Gauge valve, Forged Body Gauge valve etc. 2 Valve Manifolds-Direct Mounting can be directly mounted on the static pressure transmitter to eliminate several parts and joints. Standard process connection is 1/2" NPTF & vent is 1/4" NPTF provided with vent plug.