The heat exchangers below are 1:1 replacements for the Kelvion GBS-DW 400H
Fits directly without modifying your pipework — delivered quickly from our own stock.
Installer or service company?
Installers and service companies order from their own net price list once their business account has been approved.

Kelvion GBS-DW 400H-10 can be replaced by UNEX PBT11-20
UNEX PBT11-20
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-14 can be replaced by UNEX PBT11-14
UNEX PBT11-14
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-24 can be replaced by UNEX PBT11-24
UNEX PBT11-24
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-30 can be replaced by UNEX PBT11-30
UNEX PBT11-30
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-34 can be replaced by UNEX PBT11-34
UNEX PBT11-34
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-40 can be replaced by UNEX PBT11-40
UNEX PBT11-40
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-44 can be replaced by UNEX PBT11-44
UNEX PBT11-44
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-50 can be replaced by UNEX PBT11-50
UNEX PBT11-50
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-60 can be replaced by UNEX PBT11-60
UNEX PBT11-60
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-70 can be replaced by UNEX PBT11-70
UNEX PBT11-70
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-80 can be replaced by UNEX PBT11-80
UNEX PBT11-80
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-90 can be replaced by UNEX PBT11-90
UNEX PBT11-90
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread

Kelvion GBS-DW 400H-100 can be replaced by UNEX PBT11-100
UNEX PBT11-100
1:1: same port-to-port dimensions (281 × 73 mm) and connection G1" external thread
Replacing the Kelvion GBS-DW 400H with the UNEX PBT11
Is there a Kelvion GBS-DW 400H in your installation that leaks or is losing capacity? The UNEX PBT11 takes its place without any change to the pipework.
Port centres
281 × 73 mm
Connections
G1" external thread
Number of plates
14 to 100 plates, 13 versions
Stock
3 of 13 versions in stock
Read the number of plates from the nameplate of your Kelvion GBS-DW 400H and choose the UNEX PBT11 with the same number in the table above. That version has the same length and comparable capacity; more plates means more capacity but also a longer unit. The UNEX PBT11 is copper-brazed with stainless steel plates.
Want to be certain you pick the right version? Send us the type number or a photo of the nameplate via the contact form. Our specialists check the dimensions and send a no-obligation quote within one working day, including insulation and mounting materials if required.
Frequently asked questions about replacing the Kelvion GBS-DW 400H
Will the UNEX PBT11 fit my Kelvion GBS-DW 400H without modifications?
Yes. The replacement has the same port-to-port dimensions (281 × 73 mm) and the same connections (G1" external thread), so the existing pipework does not need to be modified.
Is the replacement for the Kelvion GBS-DW 400H available from stock?
3 of the 13 versions are in stock in our warehouse in Oosterhout, the Netherlands, and are delivered quickly. The other versions are available on request.
Which plate counts are available?
The replacements are available from 14 to 100 plates, in 13 versions. Choose the version with the same plate count as your current Kelvion GBS-DW 400H.
What does it cost to replace a Kelvion GBS-DW 400H?
Request a no-obligation quote; you will receive pricing within one working day. Call us for expert advice: +31 (0)162 429 068.
