Engineered Controls 3176 1-1/4″ F x M NPT Brass Back Pressure Valve LP Propane

Engineered Controls MFG# 3176 Brass Back Pressure Valve – 1-1/4″ F x 1-1/4″ M NPTThis heavy-duty Engineered Controls back pressure valve is designed to protect container openings and prevent unwanted reverse flow in propane, LP gas, and bulk storage tank systems. Commonly used in container line applications where flow must be restricted to a single direction.When paired with a compatible single check filler valve, this unit helps create a double-check filler system, providing added safety and preventing product loss during cylinder filling or bulk tank operation.Key Features1-1/4″ F. NPT inlet × 1-1/4″ M. NPT outletMachined brass construction for long service lifeSoft-seat design with synthetic rubber seal disc for secure, positive sealingGenerous internal flow channels designed for minimal pressure dropIdeal for LP Gas, Propane, and Natural Gas systemsSuitable for bulk plant filling, storage tank protection, and commercial gas handlingOEM Manufacturer Number: MFG# 3176DLP Number: 1LP1398ApplicationsDOT cylinder filling linesPropane storage tank filling systemsBulk gas distributionBackflow protection in LP/Propane pipingSingle-direction flow control for industrial gas systemsThis is a brand-new OEM valve, built for demanding commercial propane and LP gas service.