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Gecko M and S Class Heater 2PSI Pressure Switch 1A HYD34-0178C-K

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  • pressure switch  34-0178C-K
  • Gecko 2PSI Pressure Switch 1A 34-0178C-K
  • metal pressure switch 34-0178C-K
  • 34-0178C-K
Now: $24.77
RRP: $39.44


pressure switch top view GeckoGecko pressure switch 34-0178C-K or HYD34-0178C-K s now metal and a bit larger to replace the discontinued red plastic switch on the right that is no longer available.

1/8 Inch mpt (male pipe thread) 2.0 PSI 1 amp 1/8 inch male pipe threaded connection Single Pole Normal Open SPNO Gecko Pressure Switch

This switch HYD34-0178C-K or HYD34-0178C replaces 510AD0167, 510AD0173, 510AD0249 and 510AD0250.

This part is now a metal/stainless  pressure switch that also replaces the discontinued plastic switches.

Pressure Switch 120/250V, 1A, 2 PSI (adjustable), Gecko SSPA

Switch Type Pressure
PSI Rating 2 psi
Manufacturer Gecko
Plumbing Connection Size 1/8"
Plumbing Connection Type Male National Pipe Thread (mnpt), Male Pipe Thread (mpt)
Pressure Switch Amperage 1A
Pole/Throw Single Pole Normally Open (spno)
Pan Material Stainless

This 2 PSI pressure switch type that  fits in the Gecko systems M Class and S Class.  This is the new model pressure switch that replaces the D-Tech pressure switches.

This pressure switch is used on Gecko M-Class and S-Class spa control systems found in Emerald Spas, Great Lakes Spas, Polynesian Spas and other brand hot tubs.

Also used in Len Gordon packs, HydroQuip and Spa Builders packs.

Electrical specifications: Switch rating / 1 Pole 1A, 1/8"mpt, SPNO, 2.0psi

Have a question? Contact us for a speedy response.  Thanks for browsing at Hot Tub Outpost.

Need teflon tape? Best to wrap the threads of the pressure switch with teflon tape to assure a good seal at the pressure switch tap on the heater manifold.

We also offer a 1/2 inch mpt to 1/8 fpt reducer if needed 439-071

 Pressure Switch Mounting Instructions

Use 2-3 wraps of teflon tape in a clock-wise direction.

Remove the plug or any debris from the pre-threaded mounting hole in the heater housing.

Carefully and slowly begin threading the pressure switch into the hole assuring the switch is going in straight and not cross-threaded.

Continue threading the switch into the heater until lightly snug and terminals are aligned as desired.  Approx. 3-4 threads will be left showing.

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