Marvair 70342 Single Pole Low Pressure Control Overview
The Marvair 70342 is a single-pole, single-throw (SPST) low pressure control engineered for dependable pressure sensing and switching in HVAC and refrigeration applications. With a wide operating range of 20 to 100 PSI and an Open High switching action, this control reliably interrupts the circuit when pressure rises above the set point — protecting equipment from over-pressure conditions.
Key Features
- Single Pole, Single Throw (SPST) switching configuration
- Pressure sensing range: 20 to 100 PSI
- Open High switching action — opens on pressure rise
- Adjustable differential for precise pressure control tuning
- 36″ capillary tube for flexible remote sensing installation
- Designed as a genuine Marvair OEM replacement part (SKU: 70342)
Application
The Marvair 70342 is ideal for use in packaged terminal air conditioners (PTACs), commercial HVAC units, and refrigeration systems where low-side pressure monitoring is required. The adjustable differential allows technicians to fine-tune the cut-in and cut-out pressure points to match specific system requirements, while the 36″ capillary provides installation flexibility in tight or remote mounting situations.
Why Choose the Marvair 70342
- Genuine Marvair OEM part ensures proper fit and function
- Wide 20–100 PSI range covers a broad spectrum of low-pressure applications
- Adjustable differential minimizes short-cycling and improves system efficiency
- Open High action provides fail-safe over-pressure protection
- 36″ capillary allows versatile mounting away from the sensing point
