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Engineered Controls 3/4″ NPT LP Gas Regulator 2nd Stage Low Pressure 935K BTU

SKU: LV4403B66R

$141.24

In stock

Same-item volume pricing
QuantityUnit priceSaving
1–4$141.240%
5–9$134.185%
10+$127.1210%

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Available to order: 30.

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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 LV4403B66R
Inlet connection 3/4 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 935,000 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

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Overview

Engineered Controls Low Pressure Second Stage Regulator – MFG# LV4403B866RDesigned for high-efficiency LP gas systems, this Engineered Controls 2nd stage regulator reduces first stage pressure (5–20 PSIG) down to a consistent burner pressure of 11” W.C., ideal for residential and medium commercial applications.

With a heavy-duty cast aluminum body and built-in integral relief valves, this regulator delivers dependable performance even in demanding environments. It features 3/4" F. NPT inlet/outlet, a built-in 1/8" pressure tap, and a bonnet vent port over the inlet to help minimize vent freeze in colder conditions.

Rated for up to 935,000 BTU/hr, this unit supports large load capacities while maintaining consistent downstream pressure. The replaceable orifice seat disc and straight-line valve closure extend the lifespan of the regulator while reducing maintenance needs.✅ 3/4" F. NPT Inlet/Outlet✅ Factory set at 11" W.C. at 10 PSIG inlet✅ Orifice: Drill #28✅ Adjustment Range: 9” to 13” W.C.✅ Bonnet Vent Position: Over Inlet✅

Finish: Brown✅ Ideal for multiple cylinder systems and normal domestic loads

Perfect match for propane distribution setups, tankless water heaters, furnaces, and backup generators.

Product details

Part / SKU LV4403B66R

Package includes

  • Engineered Controls 3/4" NPT LP Gas Regulator 2nd Stage Low Pressure 935K 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.

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