Baker Hydro 31B0077 HRV valve adapter, union connectionBaker Hydro HRV Valve Adapter, 31B0077 In stock$4899
Baker Hydro 31B0077 HRV valve adapter, union connection
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Baker Hydro HRV Valve Adapter, 31B0077

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$4899
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Quick overview

  • Direct replacement adapter Part number 31B0077, the adapter fitted on Baker Hydro filter valve connections.
  • HRV side mount filters Listed in the Baker Hydro HRV side mount sand filter parts group.
  • HRC cartridge filters Also listed for the HRC-300 and HRC-400 cartridge filter models.
  • Supplied without the o-ring The listing is the adapter alone, so order the sealing o-ring separately if yours is flattened or cracked.
  • Union style connection Takes the union nut that joins the valve to the filter tank.
  • Part number 31B0077 UPC 788379764562, for matching against the part in your hand.
Full description and specifications ↓

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Product details

The 31B0077 is the valve adapter used on Baker Hydro filters, the fitting that carries the union connection between the filter valve and the tank. It is listed for the HRV side mount sand filters and for the HRC-300 and HRC-400 cartridge filters.

What it does

The adapter is the threaded piece the union nut pulls against. It takes the load every time the valve is unbolted and refitted, and it is the part that ends up cracked or distorted after a few seasons of that. A joint that keeps weeping after a new o-ring is usually telling you the adapter itself is done.

Before you order

The adapter is supplied on its own, without the o-ring, so if the seal is flattened or split get one at the same time. Baker Hydro filters have also been badged and serviced under the Waterco name over the years, so go by the filter model and the 31B0077 number rather than the label on the tank.

Specifications
Brand Baker Hydro
Manufacturer part number 31B0077
UPC 788379764562
Part type Pool filter part
Type Valve adapter
Included Valve adapter only, o-ring not included
Fits Baker Hydro HRV side mount sand filters
Also fits Baker Hydro HRC cartridge filters, HRC-300 and HRC-400
Shipping weight 0.28 lb
Ships Parcel

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Questions and answers

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

Does the o-ring come with it?
No. This listing is the adapter without the o-ring, so plan on sourcing the seal separately if the old one is hard, flat or split.
Which filters does it fit?
It is listed for Baker Hydro HRV side mount sand filters and for the HRC-300 and HRC-400 cartridge filters.
Is this the same part on a Waterco badged filter?
Baker Hydro equipment has also been sold and serviced under the Waterco name. Match the part number 31B0077 and the filter model rather than the badge on the tank.
Why would the adapter need replacing?
Adapters crack at the threads or distort where the union nut bears down, and once that happens the joint weeps no matter how many o-rings you fit.
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