Johnson Controls P74FA-1C Differential Pressure Control, SPDT Differential w/ 1/4" Male Fittings - These differential pressure controls are for use as operating controls and/or indicating system functions through display lights or panels. They measure the difference in pressure exerted upon its two sensing elements. The controls are available for applications sensing air, oil or liquid. Typical applications are proof of flow across a chiller or water cooled condenser, proof of flow in a heating or cooling coil and lube oil pressure sensing on refrigeration compressors. On a proof of flow application the control measures pressure drop across two different points in either a closed water circulating system or a city water to supply system. On a proof of flow application in a water chiller system the control activates a light or signal to indicate a loss of water. The control may also be applied as a lube oil pressure sensing control on refrigeration compressors. They may be used in combination with P28 and/or P45 oil pressure cutout controls on two compressor, single motor units to reduce the oil system cost. Special low pressure models are available for variable speed and screw compressor oil pressure applications. Single and double pole models are available with contacts that open on a pressure differential increase or close on a pressure differential increase. Also available are models with single-pole, double-throw enclosed contacts or with main and separate reverse-acting auxiliary contacts. Controls with lockout feature require manual reset to reclose circuit after lockout. The ?trip-free? reset will not permit restart until reset button is pushed and released. The operation point of the control is readily adjusted by rotating the adjusting disk. The control set points are easily read on a calibrated scale.
Most products will ship faster than the listed timeframe. In addition, we often have more than the listed quantity in stock. If you'd like to verify stock or check for additional quantity, please reach out to us.
Since 2012, B2E Surplus LLC (aka Back To Earth Surplus) buys and sells quality commercial and industrial supply. This includes automation, building controls, electrical, HVAC, plumbing, and industrial materials. We are dedicated to running an environmentally and socially conscious company. We are known as a "surplus", "overstock", or liquidator. We stock a wide variety of products, including current-catalog and legacy/obsolete products. We also tend to stock a lot of special-order and hard-to-find products.
We are located in Tempe Arizona (USA) and can handle both domestic and international orders.
B2E Surplus LLC
910 W Carver Rd
Tempe, AZ 85284
USA
D-U-N-S: 01-246-1875
Experian BIN: 961642662
LEI: 984500DZF582F7RD9J66
SAM UEI: L1UUS9LTYXG7
CAGE NCAGE: 9KWG6
Section 889 Compliant