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🔥 Keep your heating system smart & efficient with Honeywell’s precision bypass valve!
The Honeywell DU145 Automatic Bypass and Differential Pressure Valve is a brass-built, easy-to-install valve designed to maintain constant flow through boilers by automatically adjusting bypass flow between 0.1 and 0.6 bar. With a high flow capacity of 50 liters per minute and 22mm compression fittings, it ensures energy-efficient heating system operation while complying with UK Building Regulations and CHeSS guidelines.
| ASIN | B006BWJS9K |
| Best Sellers Rank | 734,046 in DIY & Tools ( See Top 100 in DIY & Tools ) 869 in Tap & Valve Washers |
| Brand | Honeywell |
| Customer Reviews | 3.9 out of 5 stars 4 Reviews |
| Exterior Finish | Gold |
| Exterior finish | Gold |
| Global Trade Identification Number | 04019837022778 |
| Included Components | 1 x Honeywell Automatic Bypass and Differential Pressure Valve |
| Inlet Connection Size | 22 Millimeters |
| Inlet Connection Type | Compression |
| Inlet connection size | 22 Millimeters |
| Inlet connection type | Compression |
| Item Dimensions | 7 x 11.5 x 4 centimetres |
| Item Type Name | Automatic Bypass Valve |
| Item dimensions L x W x H | 7 x 11.5 x 4 centimetres |
| Manufacturer | Honeywell |
| Material | Brass |
| Maximum Pressure | 6 Bars |
| Model Number | DU145-3/4B |
| Outlet Connection Type | Compression |
| Part Number | DU145-3/4B |
| Unit Count | 1.0 count |
| Valve Type | automatic bypass,automatic bypass valve |
K**G
Perfect
Excelent 👍 101%👍
D**E
Very disappointed - probably going to return
Very disappointed. Firstly it looks very easy for the internal plunger to settle out of alignment and allow permanent leakage/bypass. The biggest problem is that both the adjustment cap and the part with the graduated scale are both free to move independently - turning the adjustment knob also turns the graduated scale so the cap arrow points to 2 all the time. Probably about to return.
A**R
Poor design
Dial with numbers on should be fixed to the body of the valve and the red knob should rotate around it. In the version I received the two rotated together making it useless. Returned to Amazon and I'm now trying an alternative manufacturer.
Trustpilot
2 weeks ago
4 days ago