281.227.9911 • fax 281.227.9912 • 15862 Diplomatic Plaza Dr. • Houston, TX 77032 • sales@tigervalve.com

Diaphragm Pneumatic Actuator

Features and Benefits

•  Improved sealing method: The diaphragm is designed with a metal sealing component. This eliminates the need to forcibly seal the diaphragm and improves design integrity.

 

•  Personnel Safety: A safety shear ring prevents actuator removal in the event that control pressure is unknowingly trapped.

 

•  Less Maintenance: Longer Seal Life is maintained through use of rolling diaphragm.

 

•  Control Pressure Protection: A pressure relief valve on the top diaphragm housing protects the diaphragm and personnel from over-pressurization of the actuator.

 

•  Corrosion Resistance: Non stainless components are phosphate coated for longer wear life.

 

•  No Special Tools: No special tools are required for spring installation or removal.

 

•  Bonnet Packing Leak Detector: A tattletale fitting located above packing visually confirms packing leaks.

 

•  Back Seat Verification: A test fitting located above the bonnet stem backseat provides verification of the stem to bonnet, metal to metal seal integrity.

 

•  Ease of Maintenance: Top shaft seals are easily replaced in the field by simply removing a retainer ring. Disassembly of the actuator or upper housing is not required for seal replacement.

 

•  Fire seal: A metal to metal seat design between the actuator, bonnet and stem serves as a secondary fire seal if high temperatures destroy lower stem bonnet packing.

281.227.9911 • fax 281.227.9912 • 15862 Diplomatic Plaza Dr. • Houston, TX 77032