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3/4″-1 1/2″ TruDesign Vented Loops with Solenoid

$209.95$249.95 incl GST

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TruDesign Vented Loops with Solenoid are designed and made in New Zealand, Tru-Design Vented Loops with Solenoid are the superior composite siphon break solutions for marine applications. Vented Loops prevent water siphoning from underwater skin fittings back into a vessel and thereby guard against accidental flooding and sinking.

These vented Loops are used predominantly in toilet to overboard applications, toilet inlet applications and holding tank to overboard applications.

A Solenoid controlled Vented Loop allows the vent to be switched to fully closed. This eliminates air entering the system as occurs with a standard vented loop. The solenoid used is normally open, requiring power only to close the valve.

Vented Loops are moulded from a glass reinforced nylon composite. High strength, high-modulus glass fibres impregnated into the nylon provides dramatic strength, stiffness, toughness, and dimensional stability to our loops.

  • Manufactured from a glass reinforced nylon composite – High strength and light weight.
  • Robust polymer covered solenoid – long life in the marine environment,
  • Diaphragm valve – Faster breaking of siphon due to larger flow rate available,
  • Female threaded Solenoid Valve – No brass/bronze adapter to corrode.
  • Constant internal diameter – No reduction in flow,
  • Self-contained mounting – 3 screw mounting posts give secure and easy installation,
  • Chemical resistant – Impervious to diesel, petrol and antifouling paints,
  • UV resistant – These fittings will not break down with ultraviolet light or discolour from the sun.
  • High quality surface finish – Will not discolour with green film as similar bronze fittings do.
  • Large operating temperature range – Suitable for all marine environments, from -40°C to +110°C.

TruDesign Range

Additional information


12V, 24V


3/4" / 19mm, 1" / 25mm, 1 1/2" / 38mm