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Tecmark Pressure Switch 4755P - Bubbles Supply

Tecmark Pressure Switch 4755P

Part #: 4755P

$42.47
In stock β€” ships today
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πŸ”’ Secure checkout↩️ 30-day returnsβœ… 1-year warranty
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1-year warrantySame-day ship before 3pm CTPerfect Fit Guarantee30-day returns

About this pressure switch

The Tecmark 4755P Pressure Switch is a critical safety component designed for spa and hot tub water systems. This SPNO (single pole, normally open) switch monitors water pressure and automatically activates heating and circulation systems when proper flow is detected. Built to handle 16 amps with reliable 1/8" NPT threading, the adjustable design allows for precise pressure calibration to match your spa's specific requirements.

As an OEM-quality replacement part, this Tecmark pressure switch delivers the exact fit and performance your spa needs to operate safely and efficiently. Bubbles Supply guarantees proper fitment, ships same-day from our Canadian warehouse, and backs every switch with a full 1-year warranty for complete peace of mind. The compact design fits standard spa control boxes, but verify your existing switch specifications and mounting configuration before installation to ensure compatibility with your system.

Exact part number

4755P

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Also known as / Replaces

This part replaces or is interchangeable with:

  • hot tub pressure switch
  • pressure flow switch
  • spa flow switch
  • SPNO pressure switch
  • Tecmark 4755P

Looking for an older part number? Check our supersession lookup tool

Technical specifications

Amperage
16A
Port type
1/8" NPT

Plumbing notes

  • Port type: 1/8" NPT

Need help measuring? Email hello@bubblessupply.com with a photo of your existing plumbing.

Common symptoms this part fixes

If your spa is showing any of these signs, this part is likely your fix:

  • Heater won't activate despite pump running
  • Spa displaying HH, ICE, or OH error codes
  • Heater cycles on and off erratically
  • Spa shuts down intermittently under normal flow
  • Control system fails to detect water flow
  • Heater stays off after pump primes

Not sure if this is your problem? Try our diagnostic centre or .

Before you buy β€” quick checklist

  • Confirm your existing switch uses 1/8" NPT threading before ordering
  • Verify your current switch is SPNO (single pole, normally open) β€” not SPNC
  • Check the amperage rating on your existing switch matches 16A
  • Note whether your switch is fixed-pressure or adjustable β€” this unit is adjustable
  • Confirm the error codes you're seeing (HH, ICE, OH) are pressure-switch-related and not a separate flow switch or sensor issue
  • Inspect the switch port on your manifold or heater for corrosion or damaged threads before installation

Reading the checklist now prevents 90% of returns. Worth the 60 seconds.

Install difficulty: Medium β€” Some experience neededTypically 30–60 minutes

What's in the box

  • Tecmark 4755P pressure switch
  • Wire leads

If your order is missing any items listed above, contact hello@bubblessupply.com within 48 hours of delivery.

Warranty

1 year manufacturer warranty against defects

Covers manufacturing defects. Does not cover improper installation, normal wear, or accidental damage.

Warranty claims: warranty@bubblessupply.com

Perfect Fit Guarantee

Ordered with our help and the part doesn't fit? Contact us before installation. We'll resolve it with an exchange, replacement recommendation, or return approval.

Learn about our Perfect Fit Guarantee β†’

Shipping

We ship across the US and Canada. US orders ship from our US warehouse to US customers; Canadian orders ship from our Canadian warehouse to Canadian customers β€” no cross-border shipping, no surprise duties. In-stock orders placed before 3pm CT ship same day. Standard shipping $9.95 flat rate. Free shipping on orders over $200. Express options available at checkout.

Returns

30-day hassle-free returns on unused parts in original packaging. Contact us before returning to receive your RMA number.

Frequently asked questions

Check the Compatibility section above to confirm fitment for your spa brand and model. If your model is not listed, use our fitment selector at /pages/find-my-part or ask our parts AI for a personalized recommendation.

In-stock orders placed before 3pm CT ship the same day. You will receive tracking information by email as soon as your order ships.

We accept returns within 30 days of delivery for unused items in original packaging. Email returns@bubblessupply.com with your order number to start a return. Installed electrical parts cannot be returned for safety reasons.

Yes, all new parts come with a 1-year warranty against manufacturing defects. Warranty does not cover damage from improper installation or normal wear and tear.

Customer reviews

AI Fitment Assistant

Tell us your spa model and we will confirm this part fits before you buy.

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