--- product_id: 954958 title: "Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection" brand: "uniweld" price: "AR$394585" currency: ARS in_stock: true category: "Uniweld" url: https://www.desertcart.com.ar/products/954958-uniweld-rhp400-nitrogen-regulator-with-0-400-psi-delivery-pressure store_origin: AR region: Argentina --- # 1/4-inch flare outlet & CGA580 inlet Durable brass piston diaphragm 0-400 PSI precise delivery Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection **Brand:** uniweld **Price:** AR$394585 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your pressure game with Uniweld’s precision powerhouse! ## Quick Answers - **What is this?** Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection by uniweld - **How much does it cost?** AR$394585 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/954958-uniweld-rhp400-nitrogen-regulator-with-0-400-psi-delivery-pressure) ## Best For - uniweld enthusiasts ## Why This Product - Trusted uniweld brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged Brass Build:** Engineered with a brass piston diaphragm and stainless steel screw for long-lasting reliability. - • **User-Friendly Gauges:** Easy-to-read 2-inch gauges with protective rubber boots keep you informed and safe. - • **Versatile Compatibility:** Works with nitrogen and CO2 (with adaptor), making it your go-to regulator for multiple gas needs. - • **Smooth Adjustment Handle:** Large brass Tee handle ensures effortless, galling-free pressure tuning every time. - • **Precision Pressure Control:** Dial in exact 0-400 PSI delivery for flawless system purging and testing. ## Overview The Uniweld RHP400 Nitrogen Regulator delivers precise 0-400 PSI pressure control with durable brass piston diaphragm construction, easy-to-read 2-inch gauges protected by rubber boots, and a smooth brass Tee handle for effortless adjustments. Featuring CGA580 inlet and 1/4-inch flare outlet connections, it supports nitrogen and CO2 (with adaptor), making it ideal for professional-grade purging and pressure testing in HVAC and refrigeration systems. ## Description Product Description Uniweld RHP400 is a durable brass piston designed diaphragm Nitrogen Regulator with a Delivery Pressure 0-400 PSI for purging and pressure testing air conditioning and refrigeration systems. Regulator with CGA580 inlet connection, 1/4 inch male flare outlet connection, self re-seating relief valve (not designed to protect downstream system) and easy to read 2 inch Contents Gauge 0-4000 PSI (Part No. G7SD) and Delivery Gauge 0-600 PSI (Part No. G8SD) with protective rubber gauge boots (Part No. GB20S). For smooth accurate delivery pressure adjustment there is a large brass Tee Handle with stainless steel pressure adjusting screw and regulator bushing that prevents galling. Regulator can be used with CO2 with the Uniweld part no. F36 adaptor, CO2 Cylinder (CGA320) to Nitrogen Regulator (CGA580) (purchased separately). From the Manufacturer Uniweld RHP400 is a durable brass piston designed diaphragm Nitrogen Regulator with a Delivery Pressure 0-400 PSI for purging and pressure testing air conditioning and refrigeration systems. Regulator with CGA580 inlet connection, 1/4 inch male flare outlet connection, self re-seating relief valve (not designed to protect downstream system) and easy to read 2 inch Contents Gauge 0-4000 PSI (Part No. G7SD) and Delivery Gauge 0-600 PSI (Part No. G8SD) with protective rubber gauge boots (Part No. GB20S). For smooth accurate delivery pressure adjustment there is a large brass Tee Handle with stainless steel pressure adjusting screw and regulator bushing that prevents galling. Regulator can be used with CO2 with the Uniweld part no. F36 adaptor, CO2 Cylinder (CGA320) to Nitrogen Regulator (CGA580) (purchased separately). ## Features - Nitrogen Regulator, Delivery Pressure 0-400 PSI - CGA580 Inlet Connection, 1/4 Inch Male Flare Outlet Connection and Easy to Read 2 Inch Gauges with Protective Rubber Gauge Boots - Durable brass piston designed diaphragm, self re-seating relief valve (not designed to protect downstream system) - Large brass Tee Handle with stainless steel pressure adjusting screw and regulator bushing that prevents galling - Regulator can be used with CO2 with the Uniweld part no F36 adaptor, CO2 Cylinder (CGA320) to Nitrogen Regulator (CGA580) (purchased separately) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008HQ6GXO | | Best Sellers Rank | #112,873 in Automotive ( See Top 100 in Automotive ) #56 in Welding Gas Regulators | | Brand Name | Uniweld | | Connector Type | not_applicable | | Customer Reviews | 4.6 4.6 out of 5 stars (818) | | Exterior Finish | not_applicable | | Global Trade Identification Number | 00688456130009 | | Included Components | Regulator | | Inlet Connection Size | 0.25 inches | | Inlet Connection Type | Flare | | Item Dimensions | 6.5 x 4.13 x 5.25 inches | | Item Type Name | Special Purpose Nitrogen Regulators | | Item Weight | 2.4 pounds | | Manufacturer | Uniweld | | Manufacturer Part Number | RHP400 | | Material Type | Brass | | Maximum Pressure | 290 bar | | Model Number | RHP400 | | Number of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Number of Ports | 1 | | Outlet Connection Size | 0.25 inches | | Outlet Connection Type | Flare | | Size | CGA580 | | Specification Met | not_applicable | | Thread Size | 0.25 inches | | Thread Type | Flare | | UPC | 756655652711 696335181738 610373673949 785533152562 688456130009 | | Valve Type | Globe Valve | ## Product Details - **Brand:** Uniweld - **Exterior Finish:** not_applicable - **Inlet Connection Size:** 0.25 inches - **Inlet Connection Type:** Flare - **Item dimensions L x W x H:** 6.5 x 4.13 x 5.25 inches - **Material:** Brass - **Maximum Operating Pressure:** 290 bar - **Number of Ports:** 1 - **Outlet Connection Size:** 0.25 inches - **Outlet Connection Type:** Flare ## Images ![Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection - Image 1](https://m.media-amazon.com/images/I/71xGQ7q6WoL.jpg) ![Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection - Image 2](https://m.media-amazon.com/images/I/41ywq2diakL.jpg) ![Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection - Image 3](https://m.media-amazon.com/images/I/41Qn6smxhAL.jpg) ![Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection - Image 4](https://m.media-amazon.com/images/I/41kcAPjM4xL.jpg) ![Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection - Image 5](https://m.media-amazon.com/images/I/41SBX8bITbL.jpg) ## Questions & Answers **Q: The advertized Delivery Pressure of this regulator is 400psi, but the delivery gauge shown in the photo shows a max pressure of 600 psi. Which is it?** A: When the first stage of the regulator is supplied with > 600 PSI, the output is limited to roughly 480 PSI in the fully open position. Also, the guy that said you wouldn't need to go that high for normal use is an idiot. Nobody knows what you will be using this regulator for. **Q: How is the CGA-580 fitting threaded into this unit? I want to take that out and use NPT as much as I can.** A: Purchase a LASCO 17-6783 1/4-Inch Female Flare by 1/4-Inch Male Pipe Thread Brass Adapter. Don't attempt to remove the existing NPT-to-flare fitting because it is sealed into the regulator assembly and you risk damaging the regulator. **Q: Will this work with argon** A: Yes it will work with argon. The regulator has a CGA 580 inlet connection and a 1/4" male flare outlet connection. **Q: I purchased this regulator and the yellow hose does not attach to the 1/4" flare, it is to small. The yellow hose fitting is to big?** A: You are not using standard refrigeration hoses. Sounds like your either using the mini- split adapter or larger vacuum type hoses. Take it by an HVAC supplier and they will show you the proper size. ## Frequently Bought Together - Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection - Appion MGAVCT 1/4" MegaFlow Vacuum-Rated Valve Core Removal Tool - Uniweld NV1 Nitro Vue Flow Indicator with 1/4" Flare Fittings Single-Gas Flowmeter, Regular, Silver --- ## 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.com.ar/products/954958-uniweld-rhp400-nitrogen-regulator-with-0-400-psi-delivery-pressure](https://www.desertcart.com.ar/products/954958-uniweld-rhp400-nitrogen-regulator-with-0-400-psi-delivery-pressure) --- *Product available on Desertcart Argentina* *Store origin: AR* *Last updated: 2026-09-19*