Hayward ECX4077B1 filter check valve for Star-Clear, Perflex, ASL and ReGenX filtersHayward Filter Check Valve, Star-Clear/Perflex/ASL/RegenX, ECX4077B1 In stock$2999
Hayward ECX4077B1 filter check valve for Star-Clear, Perflex, ASL and ReGenX filters
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Hayward Filter Check Valve, Star-Clear/Perflex/ASL/RegenX, ECX4077B1

Ask a questionMPN ECX4077B1
$2999
In stock
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Quick overview

  • Genuine Hayward part The factory ECX4077B1 check valve, not an aftermarket substitute.
  • Stops DE blowback Keeps diatomaceous earth from discharging back into the pool when the pump shuts off.
  • Wide filter coverage One valve serves Star-Clear and Easy-Clear cartridge filters, Perflex extended cycle DE filters, ASL filters and ReGenX grid element DE filters.
  • Common cause of cloudy startup A tired check valve is often the reason DE reappears in the pool after every pump cycle.
  • Small part, quick swap An inexpensive service item that restores normal filter behavior without touching the tank internals.
  • Keeps the filter charged Holding the media in the tank means the filter goes back to work as soon as the pump restarts.
Full description and specifications ↓

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Product details

The Hayward ECX4077B1 is the genuine replacement check valve used across a wide span of Hayward filters: Star-Clear and Easy-Clear cartridge filters, Perflex extended cycle DE filters, ASL filters and ReGenX grid element DE filters.

What it does

The check valve sits in the filter plumbing and only allows flow in one direction. On a DE filter that is what keeps the powder in the tank when the pump switches off. Without a working valve, water and media drift backwards through the filter and land in the pool, so every startup is followed by a cloud of DE on the floor.

When to replace it

If you see DE in the pool after the pump cycles off, or the filter loses its charge between runs, the check valve is the usual cause. It is an inexpensive part and a straightforward swap, so it is worth changing before pulling grids or elements to look for tears.

Specifications
Brand Hayward
Manufacturer part number ECX4077B1
UPC 610377025140
Type Filter check valve
Part type Pool filter part
Fits Hayward Star-Clear C-250, C-500, C-750, C-1000; Easy-Clear C400, C550; Perflex EC-30, EC-40, EC-60 Series II, EC-65, EC-75; ASL; ReGenX RG-450, RG-700
Shipping weight 0.3 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Why does DE come back into my pool when the pump stops?
That is the classic sign of a failed check valve. The ECX4077B1 holds the media in the tank when flow stops, so replacing it is the first fix to try.
Is this a genuine Hayward part?
Yes. It is the Hayward OEM check valve, part number ECX4077B1.
Which filters does it fit?
Hayward Star-Clear and Easy-Clear cartridge filters, Perflex extended cycle DE filters, ASL filters and ReGenX grid element DE filters.
Does it work on cartridge filters too, or only DE?
Both. The same valve is used on the Star-Clear and Easy-Clear cartridge filters as well as the Perflex and ReGenX DE filters.
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