---
product_id: 42583224
title: "Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV"
brand: "conrader"
price: "C$8719"
currency: NIO
in_stock: false
reviews_count: 2
url: https://www.desertcart.ni/products/42583224-campbell-hausfeld-unloader-check-pilot-valve-combo-for-gas-compressor
store_origin: NI
region: Nicaragua
---

# Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV

**Brand:** conrader
**Price:** C$8719
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV by conrader
- **How much does it cost?** C$8719 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/42583224-campbell-hausfeld-unloader-check-pilot-valve-combo-for-gas-compressor)

## Best For

- conrader enthusiasts

## Why This Product

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

## Description

Replaces Campbell Hausfeld ST128408AV Made in USA Check valve /Unloader valve / Pilot valve all in one - (continuous run unloader) for gas & electric powered air compressors 140-175 PSI factory setting. pressure can be adjusted 30-40 psi up or down 3/4" Compression Top Inlet x 1/2" Female NPT Pipe Thread outlet to air tank ( Visit our store for a wide variety of HP ratings and Multiple Inlet / Outlet configurations ) Pressure can be adjusted 30-40 PSI Higher or Lower. If pressure adjustment is needed, Please see Pic attachment for adjustment instructions. 30 scfm Rating - comes complete with hand unloader and muffler/silencer - Inlet / Outlet are in-line with each other Piloted discharge check valves combine a pilot valve, a discharge valve, and a check valve into one system used to run an air compressor at a constant speed. They are used on both gas engine and electric motor compressors. The top inlet portion of the valve will connect to your main airline from your pump. The bottom outlet will connect to your air receiver tank. The 1/8" Male NPT Connection on the Throttle control cable will connect to the throttle control port on the unloader. The Z bend tip of the throttle control cable will connect to the throttle arm on your engine. Muffler is included to reduce noise. Please Contact us if you have any questions

## Features

- Replaces Campbell Hausfeld ST128408AV     3/4" Compression TOP Inlet x 1/2" Female Pipe Thread outlet to air tank     140 - 175 psi with manual hand unloader    ›See more product details

## Images

![Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV - Image 1](https://m.media-amazon.com/images/I/71IFUNSD8GL.jpg)
![Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV - Image 2](https://m.media-amazon.com/images/I/71X4240vSAL.jpg)
![Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV - Image 3](https://m.media-amazon.com/images/I/81HR1-p8AHL.jpg)
![Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV - Image 4](https://m.media-amazon.com/images/I/71TyN9WyH+L.jpg)
![Campbell Hausfeld Unloader Check Pilot Valve Combo for gas compressor ST128408AV - Image 5](https://m.media-amazon.com/images/I/81Msn+3d6pL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Performance
  

*by W***K on Reviewed in the United States on April 11, 2021*

Works good recommend

### ⭐⭐⭐⭐⭐ 







  
  
    Just as needed.
  

*by J***A on Reviewed in the United States on October 22, 2021*

Just the part I needed.

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**Shop now:** [https://www.desertcart.ni/products/42583224-campbell-hausfeld-unloader-check-pilot-valve-combo-for-gas-compressor](https://www.desertcart.ni/products/42583224-campbell-hausfeld-unloader-check-pilot-valve-combo-for-gas-compressor)

---

*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-03-13*