Hyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve
SKU: 79425938792

Hyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve

Sale price$76.94 Regular price$85.49
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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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Description

Hyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing ValveHyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve The Hyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve is a comprehensive accessory kit designed for use with Hyco Speedflow unvented water heaters. Depending on the specific installation requirements, additional components such as this set may be necessary to ensure compliance with UK water regulations. This accessory combines an expansion vessel, check

Hyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve

The Hyco SF4 Speedflow Expansion Vessel, Check Valve & Pressure Reducing Valve is a comprehensive accessory kit designed for use with Hyco Speedflow unvented water heaters. Depending on the specific installation requirements, additional components such as this set may be necessary to ensure compliance with UK water regulations.

This accessory combines an expansion vessel, check valve and pressure reducing valve to help maintain safe and efficient system operation. The expansion vessel manages pressure created by thermal expansion, the check valve prevents backflow, and the pressure reducing valve helps regulate incoming water pressure for improved system stability.

Designed for straightforward integration with Speedflow systems, the SF4 kit provides a reliable solution for installers needing to meet regulatory requirements while maintaining efficient hot water system performance.

Key Features

  • Expansion vessel, check valve and pressure reducing valve set
  • Designed for Hyco Speedflow unvented water heaters
  • Helps manage pressure caused by thermal expansion
  • Check valve prevents backflow within the system
  • Pressure reducing valve regulates incoming water pressure
  • Supports compliance with UK water regulations
  • Durable and reliable construction for long-term use

Documents

Data Sheet: View the data sheet

Instruction Manual: View the instruction manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 79425938792

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4.7 ★★★★★
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ShainaKatt
Boise, US
★★★★★ 5
Dogs love them
Style: Ball, Size: Medium (Pack of 2)
Our dogs love these. What’s great is that you can add more plastic (like from water bottles) if the plastic starts to fall out from the center. If you have a chewer, though, these won’t last you long. Our shepherd mix loves these and then starts to pull the rubber apart the more she plays with it. Our other dogs treat it normally, though, and those ones last forever. They also get some decent height when bounced, and they make a unique whistling noise when thrown.
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Reviewed in the United States on November 17, 2025
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Verified Purchase
waragon
Waukegan, US
★★★★★ 4
Our pup loves the cronch cronch!
Style: Ball, Size: Medium (Pack of 1)
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in play time. And they are keeping him busy at home - that’s a good thing. He loves investigating the crunchy-cronchy-crinkly sound which is a nice change from squeakers. It can withstand his destructive chewing well-being, gentle on his little teeth. I love that. Chuck-It is thinking outside the box with a variety of balls to keep dogs engaged! I do worry about the crinkle plastic inside because it is accessible because of the air holes and it feels a little sharp. So this will have to be an at home toy so we can monitor his play.
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Reviewed in the United States on May 28, 2026
M
Verified Purchase
Mystical Lady
Pawtucket, US
★★★★★ 5
Great products all around
Style: Ball, Size: Medium (Pack of 2)
Any of these balls are great! My dogs love all of them. The squeaky ones are their favorite!
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Reviewed in the United States on March 12, 2026
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Raquel
Phoenix, US
★★★★★ 5
My dog loves it!
Style: Ball, Size: Medium (Pack of 1)
This crunch ball was a Christmas gift for my 65lbs fur baby. It’s now mid April and he still loves it. He loves running after it and chomping down on it. It is still in good shape despite all the chomping it’s gotta . I highly recommend. He goes back to this toy agin and again! Great buy.
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Reviewed in the United States on April 15, 2026
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Verified Purchase
HalfTrac
Birmingham, US
★★★★★ 5
Our first babies favorite and longest lasting ball yet and he is fixing to be 7.
Style: Ball, Size: Medium (Pack of 2), Style: Ball, Size: Medium (Pack of 2)
Toughest ball we have found yet. Our doberman loves Chuckit! Balls especially the crunch one. He spreads all the balls and toys we have bought but these lasted the longest. The crunch and the glow in the dark are usually his pick but he has several different choices.
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Reviewed in the United States on May 24, 2026

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