Honeywell Eclipse 550100-47 Check Valve Unit

Module Feature

550100-47 is Honeywell Eclipse Series 1000 disc-style check valve, used inside industrial burner gas valve trains. It allows one-way flow of air or natural gas and stops reverse backflow to protect upstream regulators and shutoff valves. The valve body is brass construction with threaded screw connection. It is a low-pressure drop design suitable for continuous combustion systems. This check valve is not a safety shutoff valve and cannot provide bubble-tight sealing. It is commonly matched with Eclipse, Maxon, Kromschröder combustion components on furnaces, ovens and boiler burner packages.

Working principle

Forward gas flow pushes the internal disc off its seat to open the flow path. When upstream pressure drops or reverse pressure appears, the disc seats automatically to block backflow. It relies on differential pressure and gravity/spring force for opening and closing action.

Onboard components

Brass valve body, disc closure element, sealing seat, internal spring, threaded inlet/outlet ports.

LED indicators

No electrical indicator.

Hardware self‑diagnosis

Manual inspection only: visual leak check and flow direction verification. No electronic self-test function.

Programming software

Not applicable, purely mechanical valve.

Electrical & Process Parameters

Model:550100-47 Brand:Honeywell Eclipse Device type:Disc Type Check Valve Size:1-1/4 inch Body material:Brass Connection:Threaded Medium:Natural gas, air Function:Prevent reverse gas flow in combustion gas train

Mechanical & Structure

Mounting:Inline threaded piping installation Protection class:IP40 Housing:Brass body

Environmental

Operating temperature:-29℃ ~ +121℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:CE, UL listed for combustion gas service Status:Honeywell Eclipse original check valve spare

Installation

Install inline in gas piping following marked flow arrow. Use proper thread sealant compatible with natural gas. Keep valve upright orientation if required. Install upstream filter to avoid particle jamming the disc. Perform leak test after assembly.

Interface

Threaded inlet port, threaded outlet port.

Diagnostic

Reverse leakage: Debris trapped on seat, worn seal or disc damage. No flow / low flow: Disc stuck closed by dirt or mechanical binding.

Product Brief

Honeywell Eclipse 550100-47 1-1/4 inch brass disc check valve, threaded connection, mechanical non-return valve for burner gas train, prevents reverse gas backflow.