---
product_id: 253769555
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: "€ 238.50"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/253769555-uniweld-rhp400-nitrogen-regulator-with-0-400-psi-delivery-pressure
store_origin: IT
region: Italy
---

# Easy-read 2-inch gauges with rubber boots 0-400 PSI precise pressure control Durable brass piston diaphragm Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection

**Brand:** uniweld
**Price:** € 238.50
**Availability:** ✅ In Stock

## Summary

> 🛠️ Regulate like a pro — precision and durability in your hands!

## 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?** € 238.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/253769555-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

- • **Built to Last Brass:** Robust brass piston diaphragm and stainless steel screw ensure longevity and corrosion resistance.
- • **Smooth Control Handle:** Ergonomic large brass Tee handle with anti-galling bushing for effortless, accurate adjustments.
- • **Precision Pressure Mastery:** Dial in exact 0-400 PSI delivery for flawless system purging and testing.
- • **Versatile Gas Compatibility:** Seamlessly switch to CO2 use with optional F36 adaptor—expand your toolkit’s flexibility.
- • **User-Friendly Gauge Visibility:** Large 2-inch gauges with protective rubber boots for clear, damage-proof readings every time.

## Overview

The Uniweld RHP400 Nitrogen Regulator delivers precise 0-400 PSI pressure control with a durable brass piston diaphragm and easy-to-read 2-inch gauges protected by rubber boots. Featuring a large brass Tee handle with stainless steel adjusting screw to prevent galling, it ensures smooth, accurate pressure adjustments. Compatible with CO2 via an optional adaptor, this regulator is engineered for professional-grade purging and pressure testing in HVAC and refrigeration systems.

## Description

Uniweld RHP400 Nitrogen Regulator with 0-400 PSI Delivery Pressure, CGA580 Inlet Connection and 1/4-Inch Male Flare Outlet Connection

## 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 |
|---------------|-------|
| Manufacturer | Uniweld |
| Part number | RHP400 |
| Item Weight | 1.09 Kilograms |
| Product Dimensions | 16.51 x 10.49 x 13.34 cm; 1.09 kg |
| Item model number | RHP400 |
| Size | CGA580 |
| Color | Multicolored |
| Material | Brass |
| Power source type | Hand Powered |
| Installation Method | gas-welding |
| Item Package Quantity | 1 |
| Maximum Pressure | 4E+2 Pound per Square Inch |
| Measurement System | Imperial |
| Specification met | CGA, ULC, CSA |
| Included components | Regulator |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Brass
- **Brand:** Uniweld
- **Item dimensions L x W x H:** 16.5 x 10.5 x 13.3 centimeters
- **Exterior finish:** Brass, Stainless Steel
- **Inlet connection size:** 0.25 Inches

## 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)

## 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
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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-23*