---
product_id: 72929252
title: "R122H-AAJ First Stage Compact Regulator, Non-Adjustable 10 psig Spring, 1/4\" x 1/2\" NPT"
brand: "emerson-fisher lp-gas equipment"
price: "2015 kr"
currency: NOK
in_stock: true
reviews_count: 8
category: "Emerson Fisher Lp Gas Equipment"
url: https://www.desertcart.no/products/72929252-r122h-aaj-first-stage-compact-regulator-non-adjustable-10-psig
store_origin: NO
region: Norway
---

# 1,100,000 BTU/hr capacity 1/4" x 1/2" NPT threaded connections 250 psig max inlet pressure R122H-AAJ First Stage Compact Regulator, Non-Adjustable 10 psig Spring, 1/4" x 1/2" NPT

**Brand:** emerson-fisher lp-gas equipment
**Price:** 2015 kr
**Availability:** ✅ In Stock

## Summary

> 🔥 Compact power, precision pressure — your propane system’s best first stage! ⚙️

## Quick Answers

- **What is this?** R122H-AAJ First Stage Compact Regulator, Non-Adjustable 10 psig Spring, 1/4" x 1/2" NPT by emerson-fisher lp-gas equipment
- **How much does it cost?** 2015 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/72929252-r122h-aaj-first-stage-compact-regulator-non-adjustable-10-psig)

## Best For

- emerson-fisher lp-gas equipment enthusiasts

## Why This Product

- Trusted emerson-fisher lp-gas equipment brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **UL-Listed Safety:** Meets rigorous UL standards ensuring safe operation in propane systems
- • **Compact & Durable:** Stainless steel body designed for tight spaces and long-lasting use
- • **Easy System Testing:** Inlet and outlet gauge taps simplify diagnostics and maintenance
- • **Precision-Set Pressure:** Factory-calibrated 10 psig outlet for consistent, reliable performance
- • **Trusted Brand Warranty:** Backed by Emerson-Fisher’s 5-year manufacturer warranty for peace of mind

## Overview

The Emerson-Fisher R122H-AAJ is a UL-listed, non-adjustable first-stage propane regulator with a 10 psig outlet setting, designed for domestic LP-gas systems. Featuring a robust stainless steel body, 1/4" x 1/2" NPT threaded connections, and a high capacity of 1,100,000 BTU/hr, it ensures safe, reliable pressure regulation. Ideal for tight installations, it includes inlet/outlet gauge taps for easy system testing and comes with a 5-year manufacturer warranty.

## Description

Fisher Type R122H is an Underwriters Laboratories (UL) listed regulator designed for two-stage LP-gas (propane) systems. The unit is designed for use as a first-stage regulator for domestic applications, perfect for tight installations. Inlet and Outlet gauge taps allow easy system testing, even in underground tanks. The Outlet pressure set point remains at a nominal factory setting of 10 PSIG/0,69 bar. !!! WARNING !!! Failure to follow these instructions or to properly install and maintain this equipment could result in an explosion and/or fire causing property damage and personal injury or death. Fisher equipment must be installed, operated and maintained in accordance with Federal, state and local codes and Fisher instructions. The installation in most States must also comply with NFPA no. 54 and 58 standards. Only Personnel trained in the proper procedures, codes, standards and regulations of the LP-gas industry should install and service this equipment. BUYER AGREES THAT RESPONSIBILITY FOR PROPER SELECTION, INSTALLATION, USE AND MAINTENANCE OF ANY PRODUCT REMAINS SOLELY WITH THE PURCHASER AND END-USER. BUYER AGREES TO COMPLY WITH THE ABOVE WARNING AND ALL INSTRUCTION MANUALS, BULLETINS AND INSTALLATION GUIDES ASSOCIATED WITH THIS PRODUCT.

Review: Did the job! - Works fine.
Review: As described, worked well - Installed and worked ok

## Features

- Body Sizes and End Connection Styles (inlet x outlet): 1/4-inch x 1/2-inch NPT
- Maximum Allowable Inlet Pressure : 250 psig / 17,2 bar
- Nominal Outlet Setting : 10 psig / 0,69 bar non-adjustable
- Capacity : 1,100,000 BTU/hr
- Vent Size : 3/8 NPT screened

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01M308YJN |
| Best Sellers Rank | #76,018 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #54 in Industrial Pressure Regulators |
| Brand | Emerson-Fisher LP-Gas Equipment |
| Brand Name | Emerson-Fisher LP-Gas Equipment |
| Connector Type | Threaded |
| Customer Reviews | 4.5 out of 5 stars 131 Reviews |
| Exterior Finish | Stainless Steel |
| Included Components | Mounting Screws |
| Inlet Connection Size | 0.5 inches |
| Inlet Connection Type | National Pipe Tapered |
| Manufacturer | Emerson Regulator Technologies, Inc. |
| Manufacturer Part Number | R122H-AAJ |
| Manufacturer Warranty Description | 5 Year Manufacturer |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Maximum Pressure | 250 psi |
| Model Number | R122H-AAJ |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Ports | 2 |
| Outlet Connection Size | 0.5 inches |
| Outlet Connection Type | NPT |
| Size | 1/4-inch x 1/2-inch |
| Specification Met | Ul, Crn |
| Thread Size | 0.5 inches |
| Thread Type | 1 |
| Unit Count | 1 Count |
| Valve Type | Diaphragm Valve |

## Product Details

- **Material:** Stainless Steel
- **Brand:** Emerson-Fisher LP-Gas Equipment
- **Inlet Connection Size:** 0.5 Inches
- **Inlet Connection Type:** National Pipe Tapered
- **Outlet Connection Type:** NPT
- **Maximum Operating Pressure:** 2.5E+2 Pound per Square Inch
- **Number of Ports:** 2
- **Outlet Connection Size:** 0.5 Inches
- **Specification Met:** Ul, Crn
- **Valve Type:** Diaphragm Valve

## Images

![R122H-AAJ First Stage Compact Regulator, Non-Adjustable 10 psig Spring, 1/4" x 1/2" NPT - Image 1](https://m.media-amazon.com/images/I/61Fj6762nyL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Did the job!
*by K***M on November 27, 2025*

Works fine.

### ⭐⭐⭐⭐⭐ As described, worked well
*by A***R on August 22, 2025*

Installed and worked ok

### ⭐⭐⭐⭐⭐ The one you need
*by R***S on February 6, 2025*

Perfect first stage regulator, no complaints at all. Go with this one, a reputable company that's been around for a long time.

## Frequently Bought Together

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*Product available on Desertcart Norway*
*Store origin: NO*
*Last updated: 2026-09-16*