PRA Air-Loaded Pressure Regulators

Advantages:

• Higher Flow Rates with Less Pressure Loss than competitive regulators!
• Automatically regulates and prevents downstream pressure from exceeding its set point.
• Wide range of adjustable settings from 5 to 125 PSI.
• Rugged construction with inlet pressure to 150 PSI (10.34 bar).
• Rolling diaphragm design assures sensitive operation.
• Non-sticking design.

Designed for highly corrosive and ultra-pure chemicals, this new regulator uses compressed air to control pressure with greater accuracy.

Pressure regulators provide protection for valuable downstream instruments and filtration systems by converting fluctuating or excessive inlet pressure to a preset maximum downstream pressure. The PRA will routinely handle inlet pressure up to 150 psi and accurately maintain a downstream pressure from 5 to 125 psi.

The design of the PRA features two opposing large area frictionless rolling diaphragms. Process pressure is applied to one of the diaphragms; air pressure is applied to the other. Because the air pressure can be maintained with more accuracy than the force provided by a spring, the PRA offers greater sensitivity and less variance from set pressure than any thermoplastic pressure regulator previously available. The PRA was demonstrated at the 1999 Chem Show in combination with Plast-O-Matic's new Stabilizer (patent pending) which measures downstream liquid pressure to provide even greater sensitivity and performance.

In addition to its enhanced performance Series PRA is the first regulator available with Plast-O-Matic's patented Fail-Dry® safety feature. The Fail-Dry is a vented chamber between two seals that provides advance warning of a primary seal failure while the valve is still 100% operable.

Series PRA is available in a number of rugged thermoplastics, including Grade 1 Type 1 PVC, Natural Polypropylene, and Kynar® PVDF. Elastomers are Viton®, EPDM, or Buna-N. Pipe sizes range from 1/4" through 3".