The Flomatic 2183A Model 78A 4" swing check valve is a flanged, flapper-style check valve designed to allow flow in one direction and help prevent backflow when flow stops. This model features an epoxy-coated ductile iron body with a metal-reinforced neoprene swing disc, and it is designed with the same flange-to-flange dimensions as a standard ANSI 90° elbow for compact piping layouts.

Specifications:

Max Pressure: 200 PSI

Max Temperature: 140°F (60°C)

Body & Cover: Epoxy-coated ductile iron

Disc: Metal-reinforced neoprene flapper

Cover Gasket: Buna-N

Fasteners: Stainless-Steel

Design: Swing check, flapper style, in-line serviceable

Flange Rating: ASME Class 150

Connection: 4" Flanged, ASME 150#

Weight: 46 lbs

Operation: The hinged flapper opens under forward flow and closes as flow reverses, helping reduce reverse flow and hydraulic shock. The in-line serviceable cover design supports inspection and cleaning without removing the valve body from the pipeline.

Construction: An epoxy-coated iron body provides corrosion resistance in water service. The metal-reinforced neoprene disc provides a resilient sealing surface, and other chemically resistant seal options are available—especially for chloramine service—when required by the application.

Applications: Water distribution, irrigation, HVAC, and pumping systems where dependable backflow prevention, compact elbow-style lay length, and serviceability are needed.

Flomatic Quality: Flomatic is known for engineered check valves built for durability, consistent performance, and long service life in demanding water and pumping applications.