Engineered Controls 3146 3/4″ F NPT x 3/4″ M NPT Brass Back Pressure Valve LP Ga

Engineered Controls 3146 Brass Back Pressure Valve – 3/4″ F NPT x 3/4″ M NPTThe Engineered Controls MFG# 3146 Back Pressure Valve is designed to provide dependable protection for LP gas containers and bulk storage tank openings. This heavy-duty brass valve ensures that flow enters the vessel in one direction while preventing reverse flow—ideal for systems that require controlled filling or where backflow prevention is critical.When paired with a single check filler valve, this unit creates a double-check filler system suitable for safe filling of propane bulk storage tanks. Precision-machined brass and a soft-seat internal sealing disc deliver long service life and secure sealing performance.Key Features✔ 3/4″ Female NPT inlet and 3/4″ Male NPT outlet for easy installation✔ Back pressure check design ensures flow direction is into the vessel✔ Soft-seat synthetic rubber disc provides positive, leak-free sealing✔ Heavy-duty brass body for long service life in industrial environments✔ Generous internal flow channels reduce pressure drop✔ Ideal for LP Gas, Propane, and Natural Gas service✔ Compatible with check filler valves for bulk tank filling systemsCommon ApplicationsLP / Propane Bulk Storage TanksDOT Cylinder Filling SystemsGas Line Backflow PreventionIndustrial Fuel Handling SystemsPropane Dispensers and Distribution EquipmentThis is a professional-grade back pressure valve built for safe, efficient, and long-lasting gas system operation.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.