--- product_id: 621339 title: "NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader" brand: "conrader" price: "₹ 10432" currency: INR in_stock: true category: "Conrader" url: https://www.desertcart.in/products/621339-new-gas-air-compressor-unloader-valve-pilot-check-valve-combination store_origin: IN region: India --- # Operates -65°F to 400°F 1/2" NPT threaded brass build 30 CFM flow rate NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader **Brand:** conrader **Price:** ₹ 10432 **Availability:** ✅ In Stock ## Summary > ⚡ Master your air compressor’s flow with smart, rugged precision! ## Quick Answers - **What is this?** NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader by conrader - **How much does it cost?** ₹ 10432 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/621339-new-gas-air-compressor-unloader-valve-pilot-check-valve-combination) ## Best For - conrader enthusiasts ## Why This Product - Trusted conrader brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quiet Powerhouse:** Includes muffler to keep your workspace calm and focused - • **Plug & Play Compatibility:** Side throttle control port integrates smoothly with your engine’s throttle arm - • **Built to Brave the Elements:** Durable all-brass construction engineered for rugged outdoor use - • **All-in-One Precision Control:** Combines pilot, check & unloader valves for seamless compressor operation - • **Effortless Pressure Management:** Factory pre-set PSI adjustable from 10 to 50 for tailored performance ## Overview The Conrader NG-1-M-140-175 is a high-performance piloted unloader check valve combining three critical functions into one compact brass unit. Designed for gas or electric air compressors, it delivers a 30 CFM flow rate, operates reliably across extreme temperatures (-65°F to 400°F), and features adjustable pressure settings (10-50 PSI). Its 1/2" NPT threaded connections and included muffler ensure easy installation and quieter operation, making it the go-to choice for professionals demanding durability and precision in outdoor compressor applications. ## Description The Gas unloader acts like the brains of the air compressor, combining a Check valve, Pilot Valve and Unloader Valve all in one. Conrader Piloted Unloader Check valves are an all-in-one combination valve to run an air compressor for continuous operation. The valve includes a pilot valve, discharge unloader valve, and check valve. This can be used on gas engine or electric motor driven air compressors. In operation, the check valve prevents back flow as the compressor builds pressure. The pilot remains closed until the downstream pressure reaches the unload setting. The pilot then opens and pressurizes the unloader valve. This causes the unloader valve to open and vent the excess air from the compressor to the atmosphere. As the compressed air downstream is used and the pressure drops to the load setting the pilot closes and depressurizes the unloader valve. The unloader valve then closes and the pressure begins to build again and repeats the cycle. ## Features - __ PLEASE NOTE: 1/2" NPT MEASURES 0.850" OUTSIDE THREAD DIAMETER IN INCHES. - ALL BRASS CONSTRUCTION AND BUILT FOR THE RIGORS OF OUTDOOR GAS COMPRESSORS. - 30 CFM FLOW RATE, PSI'S ARE PRE-SET FROM THE FACTORY AND CAN BE ADJUSTED ON THE PILOT VALVE. - PRESSURE DIFFERENTIAL 10 TO 50 PSI, OPERATING TEMP -65f TO 400f MAX. MUFFLER INCLUDED. - THIS UNIT IS DESIGNED TO WORK IN CONGRUENCE WITH A THROTTLE CONTROL MECHANISM (NOT INCLUDED) THAT CONNECTS FROM THE SIDE THROTTLE CONTROL PORT ON THIS VALVE TO THE THROTTLE ARM ON YOUR ENGINE. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00B7C9LZU | | Best Sellers Rank | #198,738 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #653 in Air-Compressor Accessories | | Brand Name | conrader | | Connector Type | Threaded | | Customer Reviews | 4.7 4.7 out of 5 stars (120) | | Exterior Finish | Brass | | Inlet Connection Size | 0.5 Inches | | Inlet Connection Type | National Pipe Tapered | | Item Dimensions | 4 x 4 x 2 inches | | Item Weight | 1.5 Pounds | | Manufacturer | conrader | | Manufacturer Part Number | NG-1-M-140-175 | | Material Type | Brass | | Maximum Pressure | 175 Pound per Square Inch | | Model Number | NG-1-M-140-175 | | Number of Ports | 2 | | Outlet Connection Size | 0.5 Inches | | Outlet Connection Type | NPT | | Size | 140-175 PSI, TOP INLET | | Thread Size | 1/2" | | Thread Type | NPT | | Unit Count | 1 Count | | Valve Type | Piloted Unloader Check Valve | ## Product Details - **Brand:** conrader - **Exterior Finish:** Brass - **Inlet Connection Size:** 0.5 Inches - **Inlet Connection Type:** National Pipe Tapered - **Item dimensions L x W x H:** 4 x 4 x 2 inches - **Material:** Brass - **Maximum Operating Pressure:** 175 Pound per Square Inch - **Number of Ports:** 2 - **Outlet Connection Size:** 0.5 Inches - **Outlet Connection Type:** NPT ## Images ![NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader - Image 1](https://m.media-amazon.com/images/I/617Y9+ocL+L.jpg) ![NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader - Image 2](https://m.media-amazon.com/images/I/611vHelMV+L.jpg) ![NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader - Image 3](https://m.media-amazon.com/images/I/51l0buadhkL.jpg) ![NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader - Image 4](https://m.media-amazon.com/images/I/51O3ufm3cNL.jpg) ![NEW Gas Air Compressor unloader valve pilot check valve combination 140-175 by conrader - Image 5](https://m.media-amazon.com/images/I/61ipw9Pa0WL.jpg) ## Questions & Answers **Q: is this product compatible with harbor freight central pneu #69783 9gal 212cc 135psi wheel barrow compressor** A: You'll need to turn the pressure down pretty low as it's is factory set to 175psi. As long as the cable is long enough it should be fine. **Q: Is there an outlet for a regulator and pressure switch** A: yes. you would have to add a tee fitting to install a regulator or pressure switch. this is an unloader valve. it regulates to the max psi your compressor will put out. **Q: Is the cut in and cut out adjustable. I need one max 150 psi** A: yes! **Q: I'm building a custom compressor that will be electric. Will I be able to use this unloader on an electric compressor?** A: Wouldn't you want one to shut you electric motor off? This will not do that,you need a electric cut off switch,this would work just to unload compressor but not shut motor off --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.in/products/621339-new-gas-air-compressor-unloader-valve-pilot-check-valve-combination](https://www.desertcart.in/products/621339-new-gas-air-compressor-unloader-valve-pilot-check-valve-combination) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-08-07*