Fema DWR3-203 pressure switch

Fema DWR3-203 gas pressure switches suitable for steam, hot water, fuel gases, and liquid fuels. Honeywell Fema DWR3-203 pressure switches certified for gases according to DVGW G260 and EN 1854 standards. Honeywell DWR3-203 pressure switches must be used within specified parameters. High-quality stainless steel parts allow use in various environments, but a chemical resistance test is required.

Fema DWR3-203 differential pressure switch technical data

• Setting range: 0.2-2.5 bar
• Switching differential: 0.17-1.2 bar
• Maximum working pressure: 10 bar
• ambient temperature: -25 to 70 °C
• ambient temperature: 70 °C
• The difference in the sizes of materials operating at contact pressure (average values) when pulling the medium
• Switching: Single-pole switching
• Switching capacity: 8 (5) A, 250 V AC
• Installation position: Vertical and horizontal
• Pressure connection: External thread G 1/2” A (pressure gauge connection) according to DIN 16288 and internal thread G 1/4” according to ISO 228, Part 1. When working with gas, the internal thread is allowed only at pressures up to 4 bar. If the pressure is > 4 bar, use a flat O-ring.

Honeywell DWR3-203 gas pressure switch standards and directives

Standards:

• EN 13611
• DIN EN 1854

Directives:

• EU/2009/142/EC (GAD)
• EU/94/9/EC (ATEX)