Colton Industries - Float Type Air Vent for Liquid Systems

AVDT Series Air Vent - PRODUCT DATA BULLETIN
AVDT Series Air Vent - INSTALLATION, OPERATION AND MAINTENANCE MANUAL

Series 'AVDT '

Available in sizes from 1/2" NPT to 1" npt for operating pressures up to 300 psig liquid service at temperatures up to 338 deg. F. and specific gravities down to 0.95.

For installation at the high points of liquid systems to allow for the venting of air during initial system commissioning and for the removal of entrained gasses during system operation.

AVDT Models are:

Model AVDT-150: for service pressures up to 150 psig
Model AVDT-300: for service pressures up to 300 psig

Materials of Construction:

Body: Cast Iron
Cover: Cast Iron
Mechanism: Stainless Steel
Float: Stainless Steel
Disc: EPDM
Gasket: Non Asbestos Fibre
Cover Bolts: Steel

Features:

The soft EPDM seating allows for bubble tight operation and eliminates the nuisance 'spitting' often associated with metal-to-metal seats.
The cover is fitted with a 1/2" NPT plugged connection. This can be fitted with a full bore ball valve to allow for manual by-pass to decrease start-up time during system filling.

Air Vent for Liquid Systems - AVDT Series

Air Vent for Liquid Systems - AVDT Series - Dimensions

Unit of Measure

Items	AVDT-150 Air Vent for Liquid Systems - AVDT Series	AVDT-300 Air Vent for Liquid Systems - AVDT Series
Connection Inlet Size¹	N/A 3/4 in
Connection Outlet Size	N/A 1/2 in
Orifice	N/A 1.6 mm1/16 in	N/A 1.19 mm3/64 in
Maximum Operating Temperature TMO	N/A 250 ºF	N/A 338 ºF
Cover Material	N/A Cast Iron – A126, Class B
Body Material	N/A Stainless Steel, T304, A240
Lever Frame Material	N/A Stainless Steel, T304, A240
Seat Material	N/A Stainless Steel, T304, A240	N/A Stainless Steel, T304
Float Material	N/A Stainless Steel, T304, A240	N/A Stainless Steel, T304
Gasket Material	N/A Non-Asbestos
Cover Bolt Material	N/A Carbon Steel – SAE Grade 5
Bracket Material	N/A	N/A Stainless Steel, T304
Bracket Pin Material	N/A	N/A Stainless Steel, T304
Valve Pin Material	N/A	N/A EPDM
Float Arm Material	N/A Viton	N/A Stainless Steel, T304, A240
Orifice Button Material	N/A Stainless Steel, T303, A276	N/A Viton
Pivot Pin Material	N/A Stainless Steel, PH 15-7 MO	N/A Stainless Steel, T303, A276
Pin Retainer Material	N/A Malleable Iron	N/A Stainless Steel, PH 15-7 MO
Pipe Plug (1/2") Material	N/A Stainless Steel – T18-8, A276	N/A Carbon Steel – SAE Grade 5
Locator Material	N/A Stainless Steel – T18-8, A276
Weight	N/A 2.5 kg5 lb	N/A
Air Capacity (Discharge to Atmosphere) at 25 psi (172 kPa)	N/A 2.5 scfm	N/A
Air Capacity (Discharge to Atmosphere) at 50 psi (345 kPa)	N/A 4.0 scfm	N/A
Air Capacity (Discharge to Atmosphere) at 75 psi (517 kPa)	N/A 5.5 scfm	N/A
Air Capacity (Discharge to Atmosphere) at 100 psi (690 kPa)	N/A 7.1 scfm	N/A
Air Capacity (Discharge to Atmosphere) at 125 psi (862 kPa)	N/A 8.6 scfm	N/A
Air Capacity (Discharge to Atmosphere) at 150 psi (1034 kPa)	N/A 10.1 scfm	N/A
Air Capacity (Discharge to Atmosphere) at 200 psi (1379 kPa)	N/A
Air Capacity (Discharge to Atmosphere) at 250 psi (1720 kPa)	N/A
¹ 3/4" is standard, for another click on Request Information Button