Pressurematic
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Pneumatic or Hydraulic High/Low Pressure Pilots ISO-Test Valve IB Series Process Management

Description The Bettis Pressurematic® line of pressure sensory devices are used to monitor pipeline or process pressure. They are suitable for use in high and low pressure shut down applications utilizing either a pneumatic or hydraulic signal. Set points are determined by piston size, spring rate and adjustments to the trip mechanism. • • • • Input is pipeline or process pressure. Output is pneumatic or hydraulic signal, responding to high and/or low pressure conditions. A spring loaded piston converts pressure into motion, activating a pilot valve when a pre-determined set point is...

PILOT VALVE: P-AR shown SUPPLY PORT SIGNAL PORT: Common with supply when pilot valve spool up. Common with exhaust when pilot valve spool down. EXHAUST PORT HIGH TRIP ADJUSTMENT: Turn CW (viewed from below) to increase high set point. PILOT VALVE SPOOL TRIP SPRING: Acts on pilot valve spool. LOW TRIP ADJUSTMENT: Turn CW (viewed from above) to increase low set point. PISTON ROD: Moves upward with increasing pressure. RANGE SCREW: Turn CW (viewed from above) to increase range limits. HEX BODY: Contains range spring. Heavier spring increases range limits. PISTON (not visible): Senses pressure....

Typical Schematics Type P-AR (Auto Reset) with Pneumatic Operator GATE VALVE-CLOSED (PILOT SHOWN OUT OF RANGE) Type P-MR (Manual Reset) with Pneumatic Operator BALL VALVE-CLOSED (PILOT SHOWN OUT OF RANGE) Type P-AR (Auto Reset) with Self-Contained Hydraulic Operator GATE VALVE-CLOSED SUCTION / EXHAUST HIGH PRESSURE HYDRAULIC (PILOT SHOWN OUT OF RANGE)

ISO – Test Valve Description The Isolation Test Valve, when used with our Pressurematic pressure sensing device, enables calibration of the pressure pilot or pressure switch without shutting down the flow line. Features • Flats on body for easy installation. • Quarter-turn operation, handle indicates position. • Handle allows padlocking in either the open or closed position. • Compact, safe, blow-out proof stem. Cannot be removed when valve is under pressure. • Spring loaded stem seal automatically compensates for normal wear as well as seal expansion and contraction due to temperature...

Contact Us: Emerson Process Management, Valve Automation facilities at your nearest location: North & South America Middle East & Africa Asia Pacific P.O. Box 105958 Abu Dhabi United Arab Emirates T +971 2 697 2000 F +971 2 555 0364 P.O. Box 32281 Doha Qatar T +974 4 576777 F +974 4 315448 Al Bradheya ,Saeed Ameen St. Area Number 29, Villa 61 Basra Iraq T +971 557 008 704 F +971 255 503 64 24 Angus Crescent Longmeadow Business Estate Modderfontein, Ext 5 1609 P.O.Box 6908 Greenstone 1616 South Africa T +27 11 451 3700 F +27 11 451 3800 9/F Gateway Building No. 10 Ya Bao Road Chaoyang...