Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Andrews Check Valve Assembly 1 Inch C785

Andrews

Andrews Check Valve Assembly 1 Inch C785

Andrews 1 inch check valve assembly for HI Flo unvented and Ecoflo water heaters.

At a glance

  • Also known as 1820844
Manufacturer part no.
C785
Showing prices

£157.20

£131.00 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Andrews check valve assembly is a 1 inch valve used in Andrews water heating appliances. It prevents reverse flow through the water circuit, keeping flow direction correct within the heater and its associated pipework. It is listed as a water heater spare under pressure relief and safety valves.

Signs this part needs replacing

  • Reduced or no flow through the valve in the intended direction
  • Water passing back through the valve when it should be held closed
  • Dripping or weeping from the valve body or its connections
  • Rattling or chattering in the pipework during operation
  • Scale or debris build-up restricting the valve internals

Before you order

  • Confirm your appliance model against the fit list above
  • Check the connection size required is 1 inch
  • Verify the flow direction marking matches the pipework it is fitted to
  • Isolate and drain the appliance before removal and fitting

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.