Value Engineered Products - 656 Series Pressure Switches

Value Engineered Products is a Widely Recognized Manufacturer of Pressure Switches

Value Engineered Products is a Widely Recognized Manufacturer of Pressure Switches

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Pressure Switches

670 Series Pressure Switches
680 Series Pressure Switches
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654 Series Pressure Switches
656 Series Pressure Switches
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656 Series Pressure Switches
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656

larger image 		These 2 5/8 in or 3 1/2 in diameter pressure switches are primarily used to measure very low airspeeds and cooling duct pressures. They have been used on fuel systems as well. These units can be used as vacuum, pressure or differential switches. The differential setting range for 654 series is from 1.5 in water column to 6 PSID and 0.5 in water column to 3 PSIG for 656 series. They come in a variety of pressure ports with or without electrical connectors. A popular use today for these units is in the prevention of premature retraction of the landing gear. These units are set at an airspeed which guarantees flight and only when that speed is reached can the landing gear be retracted.



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Item #

Type

Fluid

Operating Pressure

Deactuation - Dec. Pressure

Actuation - Inc. Pressure

656-3 Differential
Pressure 		Air
R-134 & Pag Oil 		400
50 in H2O 		>250
1.6 in H2O 		340 ±10
2.4 ±0.4 in H2O
656-4 Differential Air 50 in H2O 0.75 to 1.00 in H2O N/A
656-8 Differential Air 50 in H2O >1.60 in H2O 2.4 ±0.4 in H2O
656-9 Differential Air 50 in H2O 1.60 in H2O 2.4 ±0.4 in H2O
656-31 Differential Air 36 in H2O 2.0 ±0.3 in H2O <3.5 in H2O
656-5 Differential Formaldehyde 36 in H2O 1.6 in H2O 2.4 ±0.4 in H2O
656-6 Differential Air 36 in H2O 1.04 ±0.30 in H2O 1.6 ±0.30 in H2O
656-7 Differential Air 36 in H2O 12.9 ±0.5 in H2O >14.0 in H2O
656A14 Differential Air 50 in H2O >0.50 in H2O 1.80 ±0.3 in H2O
656-15 Differential Air 100 in H2O >5.7 in H2O 6.9 ±0.4 in H2O
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Value Engineered Products  |  3541 Old Conejo Rd., Ste# 117  |  Newbury Park, CA 91320  |  Ph: 805.499.1959  |  Fax: 805.499.1955  |  Email Us: customerservice@veproducts.com  |  Privacy Policy