Pressure Regulation

Filterchem Pressure Regulators sense downstream pressure in fluid lines and open or close to maintain a selected downstream pressure. These valves are used to protect equipment and filters from excessive line pressures. These valves are adjustable from a range of 5 to 70 psi (5 to 75 psi for 1/2" size). Filterchem Pressure Relief Valves protect equipment from excess pressures by opening up at a selected pressure and relieving liquid line pressure back to a holding tank or drain. These valves are adjustable from 10 to 80 psi. Filterchem Pressure Regulators and Relief Valves are of molded construction of Type 1 PVC, with Viton® o-rings and PVDF-coated springs. Regulators are also available in polypropylene, and the pressure relief valve is also available in PVDF Kynar®.

Regulator Features - 1/2" thru 2" sizes
• 125 psi @ 75°F inlet pressure    • Regulates and stabilizes downstream pressure   • PVC valves for applications to 140°F   • Polypropylene valves for applications to180°F   • Adjustable from 5 - 75 psi for 1/2", 5 - 70 psi for 3/4" through 2" sizes
Relief Valve Features - 1/2" size only
• 125 psi @ 75°F inlet pressure   • Relieves excess line pressure

The Type 582 Pressure Reducing Valve shall control downstream pressure. The set pressure is controlled via an adjustment screw. The spindle is of non-rising design. The bonnet connection is of threaded design. The seal material is indicated by color coded external tab. Following assembly, every valve is tested and certified bubble tight exceeding Class VI standards. The Compact design enables installation even where space is limited. Threaded bonnet eliminates the need for body assembly bolts. Significantly shorter lay length with union ends. No need to re-torque due to threaded bonnet. Easily adjusted set pressure with non-rising spindle. Constant and low vibrating control behavior. Tightness resistant to temperature cycling. Adjustment of set pressure possible during operation. Pressure gauge options for aggressive media. Connection options in true union, spigot or flanged. Low pressure spring set available (4-44 psi) Optional Pressure Gauges. Pressure gauge mounting on either side of the 582 valve to accommodate required installation direction. Standard gauges are 304 stainless steel or brass with either EPDM or FPM elastomeric seals. Valve bodies of all varieties can accommodate two pressure gauges.

Pressure Retaining Valve Type 586 are engineered for precise control in your application. Retaining and reducing valves offer superior performance with minimal space requirements. The modular design provides configuration flexibility and easily replaceable cartridges facilitate maintenance and reduce required spare parts. Pressure regulating valves with a completely re-engineered design. The new valves are compact - without restricting performance in any way. They are easy to install and operate - the set screw controls a non-rising spindle for even flow control. The PRV’s are flexible due to the modular design, allowing part interchange between multiple sizes of valves and components. 586 pressure valves are available in PVC, CPVC, Polypropylene, and PVDF. Diaphragm is PTFE/EPDM. Seals can be EPDM, FPM or PTFE. Bonnet assembly is glass-filled polypropylene.  The 582 Pressure Reducing Valve reduces the line pressure to a set value on the valve outlet. The outlet pressure is in no direct relation to the inlet pressure. Independent of rising or falling inlet pressure, the outlet pressure stays constant. The 586 Pressure Retaining Valve maintains the line pressure to a set value on the valve inlet. The inlet pressure is in direct relation to the flow. Independent of pressure fluctuations., the system pressure stays largely constant. The Type 586 can be used in relief applications in combination with a tee.

Plast-O-Matic Series PRHM pressure regulators are designed to handle corrosive and ultra-pure liquids with inlet pressures up to 150 psi at 75°F. The standard downstream set pressure range is 5 to 125 psi; however, with special springs it can reach 75 psi. The design incorporates a poppet seat at the valve orifice to prevent sticking and double U-cup seals on the internal shaft to prevent inlet pressure from affecting the sensing of the downstream pressure. Also, the one-piece body construction eliminates internal leakage that could cause the set pressure to creep beyond a safe limit. A unique rolling diaphragm seal isolates the spring chamber from the downstream liquid. This unique design, in conjunction with a pressure balanced shaft, assures smooth and stable control. Series PRHM pressure regulators prevent downstream pressure from exceeding the desired set pressure. The regulator will remain closed as long as the set pressure is maintained. As equipment or valves downstream of the regulator begin to open and demand flow, the downstream pressure begins to fall and the regulator opens. It continues to open further as more flow is needed until its maximum opening is reached. When the downstream pressure again reaches the set pressure, the regulator closes. Series PR pressure regulators are available in PVC, Polypropylene, PTFE and PVDF. Seals can be EPDM or FKM. For Series PRHM, inlet and outlet connections are NPT female threads.

Advantages of Plast-O-Matic PRHM Regulators
• Automatically regulate and prevent the downstream pressure from exceeding its set point   • Large surface area of its frictionless rolling diaphragm provides exceptional sensitivity to pressure fluctuations      • Downstream pressures settings adjustable from 5 to 125 psi   • Optional gauge ports to assist with setting and monitoring pressure   • Rugged construction with inlet pressures to 150 psi   • Seal concepts provide non-sticking design   • Control spring is isolated from liquid path

* PR series pressure regulators with a pressure setting range of 5 to 50 psi - request information on PH Series regulators.

Plast-O-Matic Series PRHM pressure regulators are designed to handle corrosive and ultra-pure liquids with inlet pressures up to 150 psi at 75°F. The standard downstream set pressure range is 5 to 125 psi; however, with special springs it can reach 75 psi. The design incorporates a poppet seat at the valve orifice to prevent sticking and double U-cup seals on the internal shaft to prevent inlet pressure from affecting the sensing of the downstream pressure. Also, the one-piece body construction eliminates internal leakage that could cause the set pressure to creep beyond a safe limit. A unique rolling diaphragm seal isolates the spring chamber from the downstream liquid. This unique design, in conjunction with a pressure balanced shaft, assures smooth and stable control. Series PRHM pressure regulators prevent downstream pressure from exceeding the desired set pressure. The regulator will remain closed as long as the set pressure is maintained. As equipment or valves downstream of the regulator begin to open and demand flow, the downstream pressure begins to fall and the regulator opens. It continues to open further as more flow is needed until its maximum opening is reached. When the downstream pressure again reaches the set pressure, the regulator closes. Series PR pressure regulators are available in PVC, Polypropylene, PTFE and PVDF. Seals can be EPDM or FKM. For Series PRHM, inlet and outlet connections are NPT female threads.

Advantages of Plast-O-Matic PRHM Regulators
• Automatically regulate and prevent the downstream pressure from exceeding its set point   • Large surface area of its frictionless rolling diaphragm provides exceptional sensitivity to pressure fluctuations      • Downstream pressures settings adjustable from 5 to 125 psi   • Optional gauge ports to assist with setting and monitoring pressure   • Rugged construction with inlet pressures to 150 psi   • Seal concepts provide non-sticking design   • Control spring is isolated from liquid path

* PR series pressure regulators with a pressure setting range of 5 to 50 psi - request information on PH Series regulators.