Diaphragm Valves

Products
Manually Operated Diaphragm Valves
Constantly improving the techniques that enhance the performance of our valves is a necessity. Tru-­Tech Valve presents that many ways of manually operating our valves with a hand wheel bonnet assembly, nut, operated or pneumatic with a manual override.

The hand wheel operated valve may be basic, but its simplicity doesn’t take away from its performance. The hand wheel is fashioned to the bonnet, whereas no cheater bar is needed to create a tight shut off.


The nut-operated valves are typical for buried services but can be above ground. A device is used to turn the nut to operate the valve.

Air Operated Diaphragm Valves
Our actuated valves are offered in many configurations with analog and digital instrumentation. If required, we can also supply them with instrumentation mounted and calibrated from all major valve instrument manufacturers.

Automated Diaphragm valves have become a standard requirement of today’s computerized plant control systems. Tru-­‐Tech Valve specializes in getting your valve set up with the right positioners, switches, feedback transmitters, etc., by utilizing qualified instrumentation and personnel.

With our experts, Tru-­‐Tech can help you through most complex diaphragm valve automation requirements.


Spring to Open (On – Off Control)Spring
This actuator/accessory package is designed to normally position the valve open. The valve will close when compressed air is admitted into the upper actuator chamber and the actuator spring will open the valve when the air is exhausted.

Air-Air, Double Acting (On – Off Control)
This actuator/accessory package is designed to open the valve when compressed air is admitted into the lower chamber and closes the valve when compressed air is admitted into the upper chamber.

Air‐Air, Double Acting (Automatic Throttling) 
This actuator/accessory package includes a positioner to accurately throttle the valve for pressure, liquid level, flow, temperature, and other control requirements. A transducer is generally supplied to provide valve modulation proportional to an electric signal (most often 4-­‐ 20 ma).

Spring To Close (On – Off Control) Or Automatic Throttling
This actuator/accessory package is designed to normally position the valve closed. The valve will open when compressed air is admitted into the lower actuator chamber and the actuator spring will close the valve when the air is exhausted.