SIT 440 D3 — Manual Gas Safety Control Valve

Description:

The SIT 440 D3 is a compact, manual gas safety control valve featuring a thermoelectric flame failure device and an adjustable pilot outlet. It’s designed for heaters, ovens, barbecues, and commercial kitchen appliances that require reliable flame supervision and compliant gas control.

Key Features

• Thermoelectric safety shutdown (flame failure device) to interrupt gas flow if the pilot flame is lost.
• Pilot outlet with flow adjustment screw for precise pilot flame control.
• Thermocouple connection: M9×1; pilot connection options: Ø 6 mm or Ø 4 mm / M10×1.
• Optional M18×1 thread beneath push‑button.
• Suitable for any mounting position; compact dimensions for tight installs.

Technical Specifications

• Inlet/Outlet Connections: Rp 1/2″ (ISO 7) standard; Rp 3/4″ available on request.
• Maximum Inlet Pressure: 50 mbar.
• Ambient Temperature Range: 0–80 °C.
• Thermocouple: M9×1; Pilot connection: Ø 6 mm or Ø 4 mm / M10×1.
• Flow Rates (Δp = 5 mbar):
  • ½″: Family I 10.7 m³/h; Family II 10.0 m³/h; Family III 5.8 kg/h.
  • ¾″: Family I 13.1 m³/h; Family II 12.2 m³/h; Family III 7.1 kg/h.
• Dimensions: Approx. 77 mm length × 38.5 mm body width.
• Weight: ~0.393 kg.
• Standards/Compliance: EN 125 (Flame supervision devices for gas‑burning appliances).

Typical Applications

• Commercial and domestic gas appliances requiring flame supervision: heaters, ovens, barbecues, and commercial deep fryers.