Engineered Controls 2nd Stage Regulator 1/2″ x 3/4″ F NPT LP Gas 450K BTU

Name: Engineered Controls 2nd Stage Regulator 1/2" x 3/4" F NPT LP Gas 450K BTU
SKU: LV3403B46R
Price: 101.99 USD
Availability: InStock

SKU: LV3403B46R

$101.99

In stock

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$101.99	0%
5–9	$96.89	5%
10+	$91.79	10%

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Available to order: 40.

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Product Description

REGIONS SUPPLY BUYING GUIDE

Product details & buying advice

For the low-pressure end of a two-stage system, choose a regulator that works with the first-stage supply and delivers the pressure your equipment requires.

Product type	Second-stage LP gas regulators
Part / SKU	LV3403B46R
Inlet connection	1/2 in. female NPT
Outlet connection	3/4 in. female NPT
Factory delivery	11 in. w.c. at 10 PSIG inlet
Adjustment range	9–13 in. w.c.
Bonnet vent	Over inlet
Propane vapor capacity	450,000 BTU/hr at 10 PSIG inlet and 9 in. w.c. delivery

What to check before ordering

Check both the pressure arriving from the first stage and the required final outlet setting.
Use the full appliance demand and the manufacturer’s stated rating conditions when comparing capacities.
Have your installer check vent clearance, protection from weather, operating pressure and system tightness.

Service reminder: A matching pipe connection is only one part of the selection. Keep the vent clear, follow the specified vent orientation and piping requirements, and replace any submerged regulator.

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

Engineered Controls LV3403B46R Low Pressure Second Stage Regulator – 450,000 BTU, LP GasThe LV3403B46R second stage regulator is engineered for precision performance in smaller LP gas systems, making it ideal for residential or cottage applications. Designed to reduce first-stage pressure (5–10 PSIG) to a safe burner-ready level of 11” WC, this compact regulator handles loads up to 450,000 BTU/hr.

Key Features

1/2” F NPT inlet and 3/4” F NPT outlet provide secure, leak-resistant connections.
Large bonnet vent helps minimize vent freeze during cold weather operation.
Equipped with a 3/8” FNPT tapped vent port for easy external vent piping.
Integral relief valve built in for added safety.
Dual 1/8" FNPT pressure taps (inlet and downstream) allow for fast diagnostics.
Designed to comply with NFPA 58: limits downstream pressure rise to under 2 PSIG.Select corrosion-resistant brown finish for outdoor durability.
Perfect for:Homes, cottages, and cabins with standard LP gas appliances like furnaces, water heaters, and stoves. Easily pairs with a first-stage regulator and is compatible with common shut-off valves like Rego 7901TB.

Product details

Part / SKU	LV3403B46R

Package includes

Engineered Controls 2nd Stage Regulator 1/2" x 3/4" F NPT LP Gas 450K BTU

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