Dielectric Unions & Flanges
Threaded and flanged unions that isolate steel from brass and copper.
View productTEMBO / TGAA000000000
Automatic Air Vents
Air that collects at the high points of a chilled or hot water system cuts heat transfer and drives corrosion. This vent clears it automatically, with an integral check valve so the vent can be serviced without draining the circuit.
Working pressure15 bar217 psi
Max temperature120°CChilled and hot water
Connection3/8" & 3/4"Check valve 1/2" MPT
Overview
Clear trapped air before it costs you heat transfer.
Air enters every chilled and hot water HVAC system — during filling, through make-up water, and out of solution as temperature and pressure change. Once it collects, it reduces heat transfer across coils, causes corrosion, and drives premature wear on pumps and heat exchangers. Venting it properly is what keeps the plant performing to its design duty.
The TEMBO automatic air vent is a full brass unit with a leakproof float that opens as air accumulates and closes against water. It is supplied complete with a check valve, so the vent body can be removed and serviced without isolating or draining the section — the check valve holds the system while the vent is off. The outlet carries a flare metal connection so a drip pipe can be run to the nearest drain instead of discharging over the plant.
Connection is 3/8" or 3/4", the check valve is 1/2" MPT, and the unit is rated to 15 bar (217 psi) and 120°C, covering chilled water, LTHW, and condenser circuits.
Combined Cooperation supplies these vents in Kuwait alongside the dielectric unions and flexible connectors used on the same plantroom and terminal-unit connections.
Integral check valve
Leakproof float
High discharge capacity
Flare metal outlet
Technical specifications
Product codeTGAA000000000
BodyFull brass
FloatLeakproof float assembly
Connection3/8" and 3/4"
Check valve1/2" MPT, supplied complete
Working pressure15 bar (217 psi)
Max temperature120°C
OutletFlare metal connection for drip pipe to drain
Technical datasheet
Connections, ratings, and product codes.
The TEMBO datasheet for this product covers the connection sizes, pressure and temperature ratings, materials of construction, and product codes (1-page extract from the TEMBO catalog).
High points of chilled water and LTHW pipingTop of cooling coils, evaporators, and radiatorsAir bottles, air vessels, and air separatorsPlantroom headers and riser tops
Questions & answers
Common questions about automatic air vents.
01Where should automatic air vents be installed?
TEMBO recommends them at the top of air bottles, air vessels and air separators; at all high points of the piping system; and at the top of cooling coils, evaporators, and radiators. Those are the points where air collects as the system fills and operates.
02Why does trapped air matter in a chilled water system?
Air adversely impacts heat transfer and causes corrosion, which leads to premature wear of components. Effective venting is what protects the performance of the heat exchanger equipment and keeps maintenance costs down.
03Does the vent need a separate isolation valve?
No. The vent is supplied complete with a check valve, which holds system pressure when the vent body is removed. That means the unit can be serviced or replaced without a separate isolation valve and without draining the section.
04What happens to the water discharged from the vent?
The outlet has a flare metal connection so a drip pipe can be led directly to the nearest drain, rather than letting the discharge fall onto the plant, insulation, or ceiling below.
Related products
Request pricing
Request a quote for automatic air vents.
Send the BOQ, support schedule, or consultant specification and our technical team will come back with selections, compliance notes, and indicative pricing.
Supplied onKNPC Mina Abdullah RefineryJaber Al Ahmad HospitalShuwaikh Power PlantAll 11 Kuwait references
Get in touch
Quotes are returned within 24–48 hours.
Phone +965 2475 6717Email info@combinedcooperation.comOffice Office No. 8, 4th Floor, Mubarak Al Tijari Building, Farwaniya, Kuwait