Radial liquid-filled pressure gauge – stainless steel

Radial liquid-filled pressure gauge, stainless steel — Ø63 and Ø100

A gauge made for installations subject to vibration: booster sets, pumps, hydrophore units, irrigation networks. The stainless steel 304 case is filled with silicone fluid that damps vibration and pulsation: the pointer stays steady where a dry gauge is prohibited. The equivalent of glycerine-filled gauges, with a silicone filling. Designed, manufactured and checked to EN 837-1.

The manufacturer rates it for applications subject to vibration or humid environments (condensation): pump rooms, irrigation pits, workshops. Glass window, radial brass BSPP connection, dual bar/psi dial, accuracy class 1.6, individual check at 5 measuring points. Two diameters: Ø63 (1/4" connection) and Ø100 (1/2" connection).

Which measuring range?

• 0 to 6 bar — low-pressure sets and circuits: precise reading between 2 and 4 bar.
• 0 to 10 bar — common booster sets and pumps: a pressure switch cutting out at 4.5-5 bar puts the pointer mid-dial, below the 65 % of full scale allowed in dynamic service.

Mounting and connection

The brass connection has a BSPP male parallel thread (ISO 228-1): it screws into any female port of the same size — tee, socket, manifold or valve. Seal on the thread (PTFE tape or hemp) and always tighten on the wrench flats with a spanner, never by the case.

If the available port is larger than the gauge thread, a M/F reducing fitting adapts it: for example a 1/2" > 1/4" reducer to fit a 1/4" gauge on a 1/2" tee. Three finishes available: black cast iron M/F reducer, galvanised M/F reducer or brass M/F reducer.

For through-panel mounting on a cabinet, the same quality exists with a rear connection: axial liquid-filled stainless steel gauge.

Dimensions (mm)

Technical specifications

Media and operating limits

• Permissible media: any fluid compatible with brass and copper (water, compressed air…), except high-viscosity or crystallising fluids and hazardous or regulated substances (oxygen, gas, fuels, toxic agents…).
• Silicone filling: suitable for applications subject to vibration or humid environments (condensation) — exactly where dry gauges are prohibited.
• Ambient temperature: -40 °C to +65 °C.

For a fixed installation without vibration (heating, domestic network), the radial dry pressure gauge in ABS is the economical alternative; for decoration only, see the 100 mm decorative dial.