Dwyer Instruments tl40-v60-4l Compound Vacuum Pressure Gauge

Product Description

The DWYER INSTRUMENTS tl40-v60-4l is a utility-grade compound vacuum and pressure gauge designed for monitoring both vacuum and positive pressure in a single instrument. The gauge covers a range of 30 inches of mercury (InHg) vacuum through 0 to 60 psi, displayed on a 3.5-inch dial face. It connects via a 0.25-inch lower-mount fitting, making it suitable for direct panel or pipe mounting. HVAC technicians, plumbers, and mechanical contractors use compound gauges like this to verify system conditions during commissioning, leak testing, and routine service of refrigeration, plumbing, and fluid-handling systems.

This compound gauge is well suited for residential and light commercial applications where a single instrument must read both sub-atmospheric and positive pressure conditions. Common install scenarios include boiler systems, refrigerant circuits, water supply lines, vacuum pump monitoring, and compressed-air systems. The lower-mount connection allows the gauge to sit flush against a panel or pipe without a protruding stem obstructing adjacent equipment.

Key Features

• Compound range: 30 InHg vacuum to 60 psi positive pressure on a single scale
• 3.5-inch dial face for clear readability at typical service distances
• 0.25-inch lower-mount (bottom) connection for direct pipe or panel installation
• Utility-grade construction suited for general HVAC, plumbing, and mechanical service
• Single-instrument solution eliminates the need for separate vacuum and pressure gauges

Compatibility

Designed as an OEM-style replacement or field-service compound gauge for general-purpose vacuum and pressure monitoring applications in residential and light commercial mechanical systems.

Installation Notes

Installation should be performed by a licensed HVAC technician or plumber familiar with the system being serviced. Isolate and depressurize the system and verify zero pressure before removing any existing gauge or fitting. Use appropriate thread sealant on the 0.25-inch NPT connection and do not overtighten, as gauge bodies can crack under excessive torque. Verify the gauge range is appropriate for the system operating pressures before placing the system back in service.

Technical Specifications

• Gauge Type: Compound Vacuum and Pressure
• Pressure Range: 30 InHg vacuum to 60 psi
• Dial Size: 3.5 inches
• Connection Size: 0.25 inches
• Connection Location: Lower Mount

Standard Information

• Brand: DWYER INSTRUMENTS
• Manufacturer Part Number: tl40-v60-4l