RegO LV404B34 Compact Twin Stage LP Gas Regulator 450,000 BTU 1/4″ x 1/2″ FNPT

Name: RegO LV404B34 Compact Twin Stage LP Gas Regulator 450,000 BTU 1/4" x 1/2" FNPT
SKU: LV404B34
Price: 195.78 USD
Availability: InStock

SKU: LV404B34

$195.78

In stock

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Quantity	Unit price	Saving
1–4	$195.78	0%
5–9	$185.99	5%
10+	$176.20	10%

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Product Description

REGIONS SUPPLY BUYING GUIDE

Product details & buying advice

A twin-stage unit puts two pressure-reduction stages in one assembly. The model you choose still needs the correct final pressure and capacity for the job.

Product type	Twin-stage LP gas regulators
Part / SKU	LV404B34
Inlet connection	1/4 in. female NPT
Outlet connection	1/2 in. female NPT
Factory delivery	11 in. w.c. at 100 PSIG inlet
Adjustment range	9–13 in. w.c.
Propane vapor capacity	450,000 BTU/hr at 10 PSIG inlet and 9 in. w.c. delivery

What to check before ordering

Verify the exact model’s outlet setting and permitted inlet conditions.
Check total appliance demand against its capacity at the published test conditions.
Plan vent orientation and weather protection with the installer, including the required pressure and leak checks.

Service reminder: Keep water and debris out of the vent and use only the vent-piping arrangement allowed for that model. A regulator that has been underwater should be replaced.

Have gas-system installation and service completed by qualified personnel. Use the current instructions for the exact model and the requirements that apply at the installation location.

Product help & manufacturer resources

RegO regulator installation and service guidance

Explore this product guide · Shop this product group · Ask Regions Supply about this part

Overview

Brand: RegO

MPN: LV404B34

Type: Compact Twin-Stage LP Gas / Propane Regulator

Fuel: LP Gas / Propane

Capacity: 450,000 BTU/hr

Inlet: 1/4″ Female NPT

Outlet: 1/2″ Female NPT

Factory Delivery Pressure: 11″ W.C. @ 100 PSIG inlet

Adjustment Range: 9″–13″ W.C.

Orifice: 7/32″ (5.56 mm)

First-Stage Body: Die-cast zinc

Second-Stage Bonnet: Die-cast zinc

Temperature Range: -40°F to +165°F

Integral Relief Valve: Yes, second stage

UL Listed: Yes

The RegO LV404B34 is a compact twin-stage regulator designed for LP gas/propane vapor service. Combining first-stage and second-stage pressure regulation in a single compact assembly, it provides controlled and reliable gas pressure for residential, commercial, and other propane installations.

With a capacity of up to 450,000 BTU/hr, the LV404B34 is suitable for applications requiring substantial propane vapor flow while maintaining a compact installation footprint. It features a 1/4″ Female NPT inlet and 1/2″ Female NPT outlet, making it compatible with many common LP gas piping configurations.

The twin-stage design reduces propane container pressure in two steps. This provides more consistent downstream pressure than a single-stage regulator and helps compensate for changes in container pressure caused by temperature, propane level, and demand.

The regulator incorporates an integral second-stage relief valve for additional system protection. Its durable construction and weather-resistant regulator design make it well suited for outdoor propane installations when installed according to applicable codes and manufacturer requirements.

Key Features

Compact Twin-Stage Design – Combines first-stage and second-stage pressure regulation into one convenient regulator assembly.

High Flow Capacity – Rated for up to approximately 450,000 BTU/hr, providing ample capacity for many LP gas applications.

LP Gas / Propane Vapor Service – Specifically designed for pressure regulation in propane vapor systems.

1/4″ Female NPT Inlet – Standard threaded inlet connection for convenient installation.

1/2″ Female NPT Outlet – Provides a common downstream connection for LP gas piping.

Nominal 11″ W.C. Delivery Pressure – Designed to supply the low-pressure propane commonly required by residential and commercial appliances.

Adjustable Outlet Pressure – Allows appropriate pressure adjustment within the regulator’s specified operating range.

Integral Relief Protection – Second-stage section incorporates a relief valve to help protect the downstream system against excessive pressure.

Two-Stage Pressure Reduction – Helps maintain stable outlet pressure as propane container pressure and appliance demand fluctuate.

Compact Construction – Reduces installation space compared with separate first-stage and second-stage regulators.

Durable Regulator Housing – Designed for demanding LP gas service and long-term field use.

Pressure Tap Provision – Allows technicians to conveniently check system pressure during installation, servicing, or troubleshooting.

Large Vent Design – Helps provide proper regulator breathing and relief operation.

Versatile Application – Suitable for many residential, mobile home, cottage, small ASME tank, and DOT cylinder propane installations.

Professional-Grade RegO Component – Manufactured by RegO, a well-known manufacturer of LPG and industrial gas control equipment.

Typical Applications

The LV404B34 can be used in appropriately sized LP gas systems supplying equipment such as furnaces, water heaters, ranges, fireplaces, space heaters, generators, and other propane-fired appliances.

Product details

Part / SKU	LV404B34

Package includes

RegO LV404B34 Compact Twin Stage LP Gas Regulator 450,000 BTU 1/4" x 1/2" FNPT

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.