Compressor filter pressure reducer EINHELL R 1/4 inch black — without oiler

The Analog pressure gauge Einhell 4134200 is a compact mechanical instrument for monitoring system pressure in pneumatic and hydraulic applications. It features an analog display with a 50 mm diameter dial, a robust brass connection, a 109 mm installation depth and a lightweight design of approximately 360 g. The housing combines black and transparent elements to provide a clear reading window while protecting the movement. This gauge is suitable where a simple, reliable mechanical pressure readout is required and where electrical measurement is not necessary.

Advantages

This analog pressure gauge offers a straightforward, maintenance‑free display of system pressure without the need for power. The brass fitting provides corrosion resistance and secure connection to standard pneumatic or hydraulic lines. Its compact diameter and moderate installation depth make it easy to fit into control panels, compressor lines or equipment housings where space is limited. The clear dial and mechanical pointer deliver immediate visual feedback of pressure changes and enable quick verification of operating conditions.

Suitable for

• Monitoring pressure on portable and stationary air compressors
• Pressure indication on pneumatic tool supply lines and workshop equipment
• Installation in control panels, machine enclosures or test benches requiring a mechanical gauge
• Hydraulic systems where a simple analog readout is acceptable

Key specifications

• Display type: analog dial with mechanical pointer
• Dial diameter: 50 mm
• Connection material: brass threaded fitting
• Installation depth: 109 mm
• Approximate weight: 360 g
• Housing: combination of black and transparent elements for protection and visibility

How to use

Mount the gauge using the brass threaded connection to the appropriate port on the pressure line or equipment. Ensure threads are sealed with suitable tape or sealant and that the connection is tightened to prevent leaks without over‑torquing the fitting. Position the dial so the pointer is easily readable from the operator location. Observe the gauge during operation to monitor pressure; if the reading stays within recommended limits no action is required. If the gauge shows unexpected pressure values, isolate and depressurize the system before inspecting fittings, lines and the gauge itself.

Recommendations

Use the gauge for regular monitoring where a durable, passive pressure indicator is sufficient. Protect the instrument from mechanical shocks and prolonged exposure to corrosive fluids; if installed in moist or corrosive environments consider additional protective measures. Calibrate or compare the gauge periodically against a reference instrument to ensure continued accuracy.