Johnson Controls P70CA-4C Pressure Control High, 20 In to 100

Johnson Controls P70CA-4C SPST Pressure Control

The Johnson Controls P70CA‑4C SPST Pressure Control is designed to open on high pressure, providing a reliable safety cutoff for refrigeration and HVAC systems Moreover, its SPST switch configuration simplifies integration into existing control panels.

Wide Pressure Range & Differential

This control covers a broad range from 20 in Hg vacuum up to 100 PSIG (–68 kPa to 690 kPa) with an adjustable differential of 7 to 50 PSIG (48 kPa to 345 kPa). As a result, it suits both light‑duty and heavy‑duty refrigeration applications.

Robust Construction & Connection

Built for ammonia service, the P70CA‑4C features a 1/4″ stainless‑steel internal NPT pressure connection rated to 325 PSIG overpressure. Furthermore, its galvanized steel housing and stainless‑steel bellows ensure long‑term durability in corrosive environments.

Easy Replacement & Compatibility

This model directly replaces GE® WR2 series and other OEM switches in the P70 lineup, making field upgrades straightforward. Additionally, the absence of a manual knob adjustment minimizes accidental misconfigurations.