Uploaded February 2026 | Updated September 2026, 2 weeks ago
ATA 21 Let’s take a look at how to adjust temperature inside of Airbus A320. Key element is hot air valve or The Trim-Air Pressure Regulating-Valve.
The Trim-Air Pressure Regulating-Valve (TAPRV) 14HK is a three-inch steel-butterfly type valve, which is electrically supplied and pneumatically actuated.
The TAPRV regulates the pressure of the hot air, which is supplied to the trim-air valves 11HK (12HK, 13HK). It performs the system shut-off function.
It also regulates the downstream pressure to a nominal 280 mbar above cabin pressure. A safety function is also included to reduce downstream pressure by about 50 % when any duct temperature goes above 80 DEG.C (176.00 DEG.F). The pressure regulation is controlled pneumatically. The two solenoids control the ON/OFF function and the safety function. A limit switch indicates CLOSED/NOT CLOSED position of the valve to the zone controller (8HK) and the ECAM system.
that was a bit of description more in the video.
*********video is just for information purposes always stick to the latest maintenance manual*********
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youtu.be/Vuoz6d96PzI
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How to control the temperature inside the aircraft
youtu.be/cu4oSGuTv80
Christmas Eve
youtu.be/iL9KfmpRL08
———-Video content———————
00:00 - zone explanation
01:36 - check of the paperwork and preparation for removal
04:36 - Where is valve located and what we can find there
09:40 - removal of valve
16:53 - how the valve looks like
17:33 - different types of the clamps
18:53 - installation of the valve
24:54 - safety reminder
28:07 - preparation for the test
29:00 - test and leak check
30:59 - demonstration of function and final test
34:00 - close up and outro
#aircraftmaintenance #howto #howitworks #aircondition #aircraftmaintenanceengineer #aircraftlovers #airbuslovers #aircraftengineer #aircrafttechnician #airsupply #aviationgeeks #aviationgeeksociety #technology #bleed #austrianaerlines #creatingjourneystronger
ATA 21 Let’s take a look at how to adjust temperature inside of Airbus A320. Key element is hot air valve or The Trim-Air Pressure Regulating-Valve.
The Trim-Air Pressure Regulating-Valve (TAPRV) 14HK is a three-inch steel-butterfly type valve, which is electrically supplied and pneumatically actuated.
The TAPRV regulates the pressure of the hot air, which is supplied to the trim-air valves 11HK (12HK, 13HK). It performs the system shut-off function.
It also regulates the downstream pressure to a nominal 280 mbar above cabin pressure. A safety function is also included to reduce downstream pressure by about 50 % when any duct temperature goes above 80 DEG.C (176.00 DEG.F). The pressure regulation is controlled pneumatically. The two solenoids control the ON/OFF function and the safety function. A limit switch indicates CLOSED/NOT CLOSED position of the valve to the zone controller (8HK) and the ECAM system.
that was a bit of description more in the video.
*********video is just for information purposes always stick to the latest maintenance manual*********
if you want support me click here:
youtube.com/channel/UCWiyEWY890-yYO636uUUUiA/join
My Flashlights Fenix LD45R:
youtu.be/Vuoz6d96PzI
fenixlighting.com/products/fenix-ld45r-adjustable-beam-flashlight
My Headlight Fenix HM75R
youtu.be/a_9F5lDHh0A
fenixlighting.com/products/fenix-hm75r-rechargeable-headlamp-plus-power-bank?variant=42909791846454
Where you can find me:
Instagram: instagram.com/zeto.r
tiktok: tiktok.com/@zeto.r
Patreon: patreon.com/Zetomaintenance?utm_campaign=creatorshare_creator
Linkedin linkedin.com/in/tom%C3%A1%C5%A1-zeman-1861a094
How to control the temperature inside the aircraft
youtu.be/cu4oSGuTv80
Christmas Eve
youtu.be/iL9KfmpRL08
———-Video content———————
00:00 - zone explanation
01:36 - check of the paperwork and preparation for removal
04:36 - Where is valve located and what we can find there
09:40 - removal of valve
16:53 - how the valve looks like
17:33 - different types of the clamps
18:53 - installation of the valve
24:54 - safety reminder
28:07 - preparation for the test
29:00 - test and leak check
30:59 - demonstration of function and final test
34:00 - close up and outro
#aircraftmaintenance #howto #howitworks #aircondition #aircraftmaintenanceengineer #aircraftlovers #airbuslovers #aircraftengineer #aircrafttechnician #airsupply #aviationgeeks #aviationgeeksociety #technology #bleed #austrianaerlines #creatingjourneystronger
