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Astralpool / Hurlcon / Raypak Water Pressure Sensor Switch - Allied Innovations / Len Gordon

$64.00 $118.00
Tax included Shipping calculated at checkout.


OEM Genuine LG/AI Water Pressure Switch (Flow Switch) for all Hurlcon, Astralpool, INSNRG, Raypak, Pentair, Hayward gas heaters. Current version supersedes all older versions with Stainless Steel thread (that were known to get blocked by rust easily). 

Allied Innovations / Len Gordon. Exactly the same pressure switch found in Astralpool & Hurlcon heaters, but at a great price.

Suits Astralpool, Hurlcon, Raypak, INSNRG, Pentair and many gas heaters that use the same 1/8" NPT thread.

  • Shipped Fast or can be Picked Up
  • Always In Stock

Used in the following equipment, plus many more:

  • Jandy / LRZ / Lite / Teledyne Laars / Zodiac: Part # R0015500, R0011300
    • All Models

  • Davey / Spa-Quip:
    • EcoSpa, Eco-Salt, and other spa equipment

  • Jacuzzi 
    • J-HN250C & J-HN400C heaters, most Hayward heaters and Compu-Heat spa controllers.

Adjustable 1-5 PSI / 7-35kPa, with 1/8" NPT thread. Originally had stainless thread. 

Installation Instructions:

  1. Ensure female thread of socket is clean and in good condition. If not, tap thread, or use suitable insert.
  2. Use small amount of thread tape or suitable thread sealant on male thread.
  3. Too much tape can damage both switch & socket
  4. Gently screw in by hand, ensuring not to cross-thread, or over-tighten. Breakage by over-tightening is not covered by warranty. Threads are tapered.
  5. Adjust pressure switch as per manufacturer's instructions.


  • Voltage: 12V, 24V, 240V
  • Part Number: 800120 - Supersedes 800140 / 800130 / 800122 / 800***
  • Contact Rating: 21A - Normally-Open or Normally-Closed
  • Adjustment: 1-5 psi / 6.9-34.5 kPa / 0.7-3.5 meters head
  • Thread: 1/8" NPT (approx 6mm) - Originally Stainless Steel. Now Noryl for corrosion-resistance

Len Gordon LG Part Nos:

  • ALLIED Innovations 800*** 800120-3 | 800140 | 800130 | 800132-3 | 800134-3 | 800122 | 800123 | 800140-0 | 800140-3 | 800140-4 | 11/13 6AMP more. 

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