---
product_id: 160782873
title: "Tecmark (TDI) Pressure Switch: 3Amp Spst 1/8\" Npt 1-5Psi Plastic"
brand: "tecmark"
price: "$61.05"
currency: USD
in_stock: true
reviews_count: 9
category: "Tecmark"
url: https://www.desertcart.us/products/160782873-tecmark-tdi-pressure-switch-3amp-spst-1-8-npt-1
store_origin: US
region: United States of America
---

# Tecmark (TDI) Pressure Switch: 3Amp Spst 1/8" Npt 1-5Psi Plastic

**Brand:** tecmark
**Price:** $61.05
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Tecmark (TDI) Pressure Switch: 3Amp Spst 1/8" Npt 1-5Psi Plastic by tecmark
- **How much does it cost?** $61.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/160782873-tecmark-tdi-pressure-switch-3amp-spst-1-8-npt-1)

## Best For

- tecmark enthusiasts

## Why This Product

- Trusted tecmark brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Tecmark Pressure Switch 1 8" MIPT (non metallic) 1 5 PSI (adjustable) SPST 3A 3903BP

Review: OEM replacement - Worked great for replacing my pressure switch on Jacuzzi brand J-235 model. My circulation pump went out after 11 yrs and while I had the spa drained I went ahead and replaced the pressure switch too.
Review: Back to chillin’ in the heat! - This fit great for a replacement in our hot tub. (It wouldn’t heat with this malfunctioning.). I replaced it and it now works great.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003ZHFHVW |
| Best Sellers Rank | #254,035 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #272 in Pressure Switches |
| Brand | Tecmark |
| Brand Name | Tecmark |
| Circuit Type | 1-way |
| Color | #03602 |
| Control Type | Pressure-based |
| Current Rating | 3 Amps |
| Customer Reviews | 4.4 out of 5 stars 62 Reviews |
| Item Weight | 0.01 Ounces |
| Manufacturer | Tecmark (TDI) |
| Material | Plastic |
| Material Type | Plastic |
| Model | 3903-BP |
| Number of Positions | 1 |
| Operation Mode | ON-OFF |
| Part Number | 3903-BP |
| Smart Home Compatibility | Not Smart Home Compatible |
| Switch Type | Single Pole Single Throw |
| Unit Count | 1.0 Count |

## Images

![Tecmark (TDI) Pressure Switch: 3Amp Spst 1/8" Npt 1-5Psi Plastic - Image 1](https://m.media-amazon.com/images/I/41ajbDumAKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ OEM replacement
*by S***S on April 27, 2026*

Worked great for replacing my pressure switch on Jacuzzi brand J-235 model. My circulation pump went out after 11 yrs and while I had the spa drained I went ahead and replaced the pressure switch too.

### ⭐⭐⭐⭐⭐ Back to chillin’ in the heat!
*by G***. on April 11, 2025*

This fit great for a replacement in our hot tub. (It wouldn’t heat with this malfunctioning.). I replaced it and it now works great.

### ⭐⭐⭐⭐⭐ Easy DIY repair to save $hundreds$
*by T***S on February 11, 2022*

Kill power, Thread the old one out, and thread the new one in, replace the wire connections, dry up any water before you turn the breaker back on, DONE!!! I left the water in my tub, I just covered the rest of the control board with some plastic drop cloth and taped it. Soaked up excess water with a towel and allowed to air dry for a bit before restoring power. Cleared my FL2 code and has been working great.

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**Shop now:** [https://www.desertcart.us/products/160782873-tecmark-tdi-pressure-switch-3amp-spst-1-8-npt-1](https://www.desertcart.us/products/160782873-tecmark-tdi-pressure-switch-3amp-spst-1-8-npt-1)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-06-08*