823
2Pages

Catalog excerpts

PRESSURE REDUCING AND SUSTAINING VALVE Model 823 Hydraulically operated control valve with independent Pressure Sustaining and Pressure Reducing functions. It sustains minimum pre-set upstream pressure, regardless of ﬂuctuating ﬂow or varying downstream pressure, and it prevents downstream pressure from rising above maximum pre-set level, regardless of ﬂuctuating ﬂow or excessive upstream pressure. BERMAD 800 series valves are hydraulically operated, piston actuated globe valves designed for high pressure operation and available in either standard oblique (Y) or angle pattern design. Their full bore hydrodynamic body provides an unobstructed ﬂow path while their seat assembly and double-chamber unitized actuator can be disassembled without removing the valve body from the pipeline. ֺ Robust structure, piston actuated – High pressure service ֺ Line pressure driven – Independent operation ֺ Elegant simplicity ■ ■ Cost effectiveo Simple to maintain Minimal external accessories ֺ In-line serviceable – Easy maintenance ֺ Double chamber ■ ■ Moderated valve reaction Moderated closing curve Click here for control accessories 1 BERMAD 800 Series valve P.S Pilot Major Additional2 Features: 3 P.R Pilot ֺ 3-way control – 823-X Cock Valve 4 ֺ Anti cavitation cage – 823-C2 Filter 5 Control clic ֺ Hydraulic check valve – 823-20 k h e r e t o h i d e * click on items to view the part ֺ Solenoid control – 823-55 ֺ High sensitivity pilot – 823-12 ֺ Downstream over pressure guard – 823-48 ֺ Proportional – 823-PD HOME VIEW See relevant BERMAD publication ֺ Flexible design - Easy addition of features ֺ Semi-straight flow - Non turbulent flow ֺ Stainless Steel raised seat – Cavitation damage resistant ֺ Obstacle free, full bore – Uncompromising reliability ֺ V - Port Throttling Plug (Optional) - Very stable at low flow Typical Application

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CLOSED Regulating This drawing refers to 1½ – 14"; DN40-350 sized valves only. For other sizes please refer to the Model's IOM. Main Valve Control System Valve Patterns, Size Range: “Y” (Globe): 1½-20”; DN40-500 Angle: 1½-18”; DN40-450 Pressure Rating: 40 bar; 600 psi End Connections: Flanged (all standard) Plug Types: Flat disc, Cavitation cage Temperature Rating: 60°C; 140°F for Cold water applications Optional higher temperature: Available on request Standard Materials: Accessories: Stainless Steel, Bronze & Brass Tubing: Stainless Steel or Copper Fittings: Stainless Steel or Brass...

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