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Fernox TF1 Antifreeze Valve | Freeze Protection for Heat Pump Systems

£98.47

Fernox TF1 Antifreeze Valve The Fernox TF1 Antifreeze Valve protects water-based air source and ground source heat pump systems from freeze damage. When outdoor temperatures fall, systems running without glycol can freeze inside the heat pump circuit, leading to serious damage and costly repairs. The TF1 valve prevents this by...

Dresses Size Chart

Dress Size Chart (Inch)
DRESSES
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 34"-35"
S 2-4 33"-34" 26"-27" 36"-37"
M 6-8 35"-36" 28"-29" 38"-39"
L 10-12 37"-39" 30"-32" 40"-42"
XL 14 40"-42" 33"-35" 43"-45"
Dress Size Chart (cm)
DRESSES
SIZE IN CM
SIZE US / CAN BUST WAIST HIPS
XS 0 78.7-81.2 60.9-63.5 86.3-88.9
S 2-4 83.8-86.3 66-68.5 91.4-93.9
M 6-8 88.9-91.4 71.1-73.6 96.5-99
L 10-12 93.9-99 76.2-81.2 101.6-106.6
XL 14 101.6-106.6 81.2-88.9 109.2-114.3

Swimwear Size Chart

Dress Size Chart (Inch)
SWIMWEAR
SIZE IN INCHES
SIZE US / CAN BUST WAIST HIPS
XS 0 31"-32" 24"-25" 33"-34"
S 2 33"-34" 26"-27" 35"-37"
M 4 35"-36" 28"-29" 37"-38"
L 6 37"-39" 30"-32" 39"-41"
XL 8 40"-42" 33"-35" 42"-44"

Shoes Size Chart

US EURO UK AUS JAPAN CHINA
5 35-36 3 3.5 21.5 35
5.5 36 3.5 4 22 35.5
6 36-37 4 4.5 22.5 36
6.5 37 4.5 5 23 36.5
7 37-38 5 5.5 23.5 37
7.5 38 5.5 6 24 37.5
8 38-39 6 6.5 24.5 38
8.5 39 6.5 7 25 38.5
9 39-40 7 7.5 25.5 39
9.5 40 7.5 8 26 39.5
10 40-41 8 8.5 26.5 40
11 41-42 9 9.5 27.5 41

Delivery

    All orders shipped with DPD unless otherwise notified.

    Minimum charge of £7.50 charge on all orders pallets charges at rate on the day of purchase.

    All orders are shipped with a DPD tracking number which is why we ask for your email and mobile number.

Returns

    Items returned within 14 days of their original shipment date in same as new condition will be eligible for a full refund or store credit (minus restocking charge).

    Refunds will be charged back to the original form of payment used for purchase.

    Customer is responsible for shipping charges when making returns and shipping/handling fees of original purchase is non-refundable.

    All sale items are final purchases.

Help

Give us a shout if you have any other questions and/or concerns.

Email:

Phone: 0333 577 2455

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Fernox TF1 Antifreeze Valve

The Fernox TF1 Antifreeze Valve protects water-based air source and ground source heat pump systems from freeze damage. When outdoor temperatures fall, systems running without glycol can freeze inside the heat pump circuit, leading to serious damage and costly repairs. The TF1 valve prevents this by opening automatically when the circuit temperature drops below 3°C, releasing a small amount of water and stopping ice from forming inside the system.

Built from durable brass and engineered for long-term reliability, it offers high flow performance and comes with both male and female BSP connections for straightforward installation on flow or return pipework. It’s available in multiple sizes and backed by a two-year guarantee.