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ControlAir 康气通Type 700BP 精密背压调压阀选型目录:APPLICATION EXAMPLE The Type 700BP is used to control the air pressure in a system supplied by a compressor. When system pressure reaches the Type 700BP set point, the unit starts relieving air pressure. This pressure is routed to an inlet valve causing it to close. Excess pressure vents through the bleed orifice and the valve opens to increase the compressor outlet pressure.
DESCRIPTION The Type-700BP Back Pressure Regulator is a high flow, highly accurate pneumatic relief valve with an adjustable set point. It's primary function is to provide protection against over pressurization in the downstream portion of a pneumatic system. This precision unit is capable of handling flows up to 50 SCFM. A rolling diaphragm provides the sensitivity that causes the Type-700BP to vent to atmosphere in response to the slightest upstream changes. FEATURES • SENSITIVITY - Provides quick response to controlled system pressure variation. • HIGH FLOW CAPACITY - Flows up to 50 SCFM (depending on set point pressure and port size). • COMPENSATING FLOW CONTROL - Venturi type velocitypressure tube adjusts main control valve opening in accordance with velocity pressure variations of flow from controlled system. • ON-LINE MAINTENANCE - Unit can be disassembled and serviced without removing from the air line. APPLICATIONS The Type-700BP is used in place of a standard relief valve to provide protection against excessive build-up in supply pressure lines to instruments and other sensitive control devices. The most common application is to control the air pressure in a system supplied by a compressor. Used in conjunction with a diaphragm operated inlet restricting valve and a bleed orifice, the Back Pressure regulator relieves excess compressor pressure while activating the intake restricting valve. When the regulator shuts off, the down-stream air vents through the bleed orifice allowing the restricting valve to open.

 

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