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| ControlAir 康气通Type 700BP 精密背压调压阀图纸资料说明： | |
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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