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Brass nitrogen regulator with two gauges and T-handle

Uniweld

Uniweld RHP800 Nitrogen Regulator 0-800 psi 2 inch

SKU CH-H153-5BY68

A brass piston diaphragm nitrogen regulator delivers 0-800 psi for purging and pressure testing AC and refrigeration systems

  • TypeKeepsakes
  • Delivers precise 0-800 psi nitrogen flow for reliable HVAC purging and testing
  • Brass piston diaphragm and stainless adjusting screw ensure smooth, accurate pressure control
  • 2-inch gauges with rubber boots show contents up to 4000 psi and delivery up to 1000 psi at a glance
  • CGA580 inlet and 1/4-inch male flare outlet fit standard nitrogen cylinders and service hoses
  • Optional F36 adaptor lets the same regulator handle CO2 cylinders with CGA320 connections

Nitrogen Regulator for HVAC Testing

The Uniweld RHP800 is a brass piston diaphragm nitrogen regulator built for purging and pressure testing air conditioning and refrigeration systems. It delivers adjustable outlet pressure from 0 to 800 PSI through a CGA580 inlet and a 1/4 inch male flare outlet. A self re-seating relief valve and large brass Tee handle with stainless steel adjusting screw provide smooth, accurate control.

Gauges and Connections

Two inch gauges display cylinder contents up to 4000 PSI and delivery pressure up to 1000 PSI, both fitted with protective rubber boots. The regulator connects directly to nitrogen cylinders via the CGA580 inlet and can be adapted for CO2 use with the optional F36 adaptor for CGA320 cylinders. Brass construction resists corrosion in field service environments.

HVAC Service Upgrade

This unit replaces basic gauges or single stage regulators that lack precise delivery control for pressure testing. The jump is worthwhile when technicians need reliable 0 to 800 PSI adjustment and clear dual gauge readings for system evacuation and leak checks. It does not suit applications requiring downstream system protection from the relief valve.

Highlights

  • Delivers precise 0-800 psi nitrogen flow for reliable HVAC purging and testing
  • Brass piston diaphragm and stainless adjusting screw ensure smooth, accurate pressure control
  • 2-inch gauges with rubber boots show contents up to 4000 psi and delivery up to 1000 psi at a glance
  • CGA580 inlet and 1/4-inch male flare outlet fit standard nitrogen cylinders and service hoses
  • Optional F36 adaptor lets the same regulator handle CO2 cylinders with CGA320 connections

Specifications

TypeKeepsakes

Questions about this item

How do I install the RHP800 on a nitrogen cylinder, and what step is often missed?

Connect the CGA580 inlet to the cylinder valve, attach a 1/4 inch male flare hose to the outlet, then slowly open the cylinder valve before adjusting the brass tee handle; the step often missed is leak-testing the inlet connection with soap solution before pressurising the system.

Which components will need replacement after extended use?

The 2 inch contents gauge (part G7SD) and delivery gauge (part G34SD) with their rubber boots (part GB20S) are the items most likely to require replacement if the faces crack or the boots perish; the self re-seating relief valve and stainless adjusting screw are designed for long service.

What is the first limit reached during sustained high-flow purging?

The delivery pressure range tops out at 800 psi, so the regulator cannot supply pressure above that level; the contents gauge reads up to 4000 psi cylinder pressure, but the outlet is capped at 800 psi regardless of flow demand.

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