PLAST-O-MATIC PRA/PRAM Air Operated Pressure Regulators

Descriptions of PLAST-O-MATIC PRA/PRAM

• Series PRA pressure regulators will prevent downstream pressure from exceeding the set pressure, when properly installed and used within the recommended ranges of pressure, temperature, and chemical compatibility.
• The ultimate determination of material compatibility is previous successful use in the same application.
• PRA regulators require a customer supplied air pressure regulator (relieving type).
• The PRA/PRAM can be used in combination with Plast-O-Matic’s patented Stabilizer which measures downstream liquid pressure and provides continuous feedback control for even greater sensitivity and performance. Molded and machined valves in 1/4″ through 3″ and metric pipe sizes in popular thermoplastic materials with a wide range of connection types. Set range 5-125 PSI.
• This is a Specialty Custom product; consult factory for availability.
• Minimum quantities may apply.

OPERATION:

• A relieving type air regulator is required to load the sensing port;
• Series PRA/M pressure regulators prevent downstream pressure from exceeding the desired set pressure. Regulator will remain closed as long as set pressure is maintained.
• As equipment or valves down-stream of the regulator begin to open and demand flow, the downstream pressure begins to fall and the regulator begins to open.
• As valves or equipment downstream open further, the pressure regulator continues to open until its maximum opening is reached.
• As the process is reversed, downstream pressure begins to increase and the regulator starts closing.
• When the downstream pressure again reaches set pressure the regulator closes bubble-tight.

Technical specifications of PLAST-O-MATIC PRA/PRAM

•  Inlet pressures to 150 PSI.
•  Downstream settings from 5 to 125 PSI.
•  Outperforms spring-loaded regulators through improved response to pressure changes; pressure is maintained
  without sacrificing flow.
•  Ideal for applications requiring frequent adjustment or remote control.
•  Multi-million cycle design.
•  Dual rolling diaphragms provide exceptional sensitivity.
•  One piece body and double u-cup design prevent leakage and eliminate “creep”.
•  Patented Fail Dry Safety Vents warn of seal failure; permits valve to continue operating and prevents liquid/air contamination.
•  Can be used to control any flow related parameter via sensors and E/P converter (see reverse side).

MATERIALS OF CONSTRUCTION AND PIPING CONNECTIONS:

• Standard connections are female NPT threaded ports.
• Socket, flanged, BSP, JIS, flare and spigot connections are also available. Standard body materials are Grade 1 Type 1 PVC, Natural Polypropylene, and Kynar PVDF.
• Standard seal materials are Viton and EPDM.
• Some Kynar PVDF components are used in the Natural Polypropylene models for strength.
• External fasteners are stainless steel; can be recessed or capped.
• For materials other than listed, please consult factory