DOUBLE ACTING AIR LOCK UP RELAY

PD 10 S

PRODUCT DESCRIPTION

Philair make double acting air lock up relay is used in conjunction with double acting power cylinders for locking air in both the chambers of cylinders when ever the main supply pressure falls below a pre-set valve.

SPECIFICATION

  • Model : PD 10 S
  • Service : Air
  • Max. input Pressure : 10 Kg/cm²
  • Signal range : 20-100 PSI (1.4-7 kg/cm²)
  • Pneumatic Connection : 1/4" NPT /BSP
  • Flow Capacities : >600 L/min. for each Port
  • Dead band : 0.025/kg/cm²
  • Diaphragm : Neoprene /EPDM /VITON with nylon insert
  • Body :LM-6
  • Internals :Brass/SS with Neoprene/EPDM seat
  • Mounting :On the actuator by a bracket

SALIENT FEATURES

  • Quick Response
  • High Sensibility and Reliability
  • Longer Life
  • Easy to Install
  • Trouble Free Service
  • Low cost
  • Soft Seating to Ensure zero Leak
PRODUCT OPERATION

The unit is mounted between output lines of double acting positioner and chambers of power cylinder. The supply pressure ("Signal) connected to the relay is sensed by a spring loaded diaphragm and the thrust developed enables a pilot valve to open. The Out put From the pilot Valve acts on another Diaphragm and the thrust developed by it acts upon a piston, which opens both the ports simultaneously. Reduction of supply pressure causes downward movement of upper diaphragm subassembly, resulting in reduction of pressure above lower diaphragm. The Piston moves upward and the valve is closed to block this air in power cylinder.

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