Barksdale Controls D1H-180 Pressure Vacuum Switch

The Barksdale D1H-180 Pressure Vacuum Switch is a single-setpoint housed diaphragm switch for controlling pressure or vacuum in industrial panels. It uses a durable anodized aluminum housing with a tamper-resistant cover over the set-point adjustment screws and a standard NEMA 4X enclosure for protection in demanding environments; an integrated 1/2" NPT conduit connector handles wiring. The pressure connection is a 1/4" NPT female port, and the unit includes about 18 inches of lead wiring for connection to control circuits rated for 60 Hz operation. This model supports both positive-pressure and vacuum applications and is part of Barksdale’s D1H/D2H family of housed diaphragm switches. Configurations for the D1H typically offer adjustable ranges up to 150 psi. Typical uses include machinery protection, process monitoring, and interlocks in control boxes and panels, where a compact, rugged, single-setpoint diaphragm switch is required.