Fisher 1805 Series Backpressure Regulators and Relief Valves

Product Description
The Fisher 1805 Series relief valves are designed for farm tap applications, providing an essential relief valve function between first-stage and second-stage regulators. These valves are suitable for use with natural gas, air, propane, or any medium that is compatible with the internal valve components. The relief pressures for the 1805 Series range from 5 to 125 psig / 0.34 to 8.6 bar, with a maximum pressure, including buildup, of 150 psig / 10.3 bar.

Key Features

• Tight Shutoff: Ensures reliable sealing to maintain proper system pressure.

• Easy Maintenance: Designed for straightforward servicing to minimize downtime.

• Simple Adjustment: Provides ease of pressure setting adjustments.

• Complete Venting: Facilitates full venting of excess pressure for safe operation.

• Sour Gas Service Capability: Suitable for applications involving sour gas handling.

Specifications

• Body Size and End Connection Styles:

  • 3/4, 1, 1-1/2, or 2 NPT.

• Maximum Inlet Pressure:

  • 150 psig / 10.3 bar, including buildup.

• Relief Set Pressure Ranges:

  • 5 to 125 psig / 0.34 to 8.6 bar in six different ranges.

• Temperature Capabilities:

  • -20 to 150°F / -29 to 66°C.

• Approximate Weights:

  • 3/4 to 1 NPT: 5 lbs / 2 kg.

  • 1-1/2 to 2 NPT: 13 lbs / 6 kg.

Applications
The Fisher™ 1805 Series backpressure regulators and relief valves are ideal for use in farm tap applications where reliable pressure relief is needed, ensuring safe operation in natural gas, air, and propane systems.