Request Information

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.
Unit of Measure

Orifice

 N/A 1.6 mm1/16 in
Connection Inlet Size1 N/A 3/4 in

Connection Outlet Size

 N/A 1/2 in

Body Material (1)

 N/A Cast Iron – A126, Class B

Cover Material (2)

 N/A Cast Iron – A126, Class B

Lever Frame Material (3)

 N/A Stainless Steel, T304, A240

Seat Material (4)

 N/A Stainless Steel, T304, A240

Float Material (5)

 N/A Stainless Steel, T304, A240

Gasket Material (6)

 N/A Non-Asbestos

Cover Bolt Material (7)

 N/A Carbon Steel – SAE Grade 5

Float Arm Material (10)

 N/A Stainless Steel, T304, A240

Orifice Button Material (11)

 N/A Viton

Pivot Pin Material (12)

 N/A Stainless Steel, T303, A276

Pin Retainer Material (13)

 N/A Stainless Steel, PH 15-7 MO

Pipe Plug (1/2") Material (14)

 N/A Malleable Iron

Locator Material (21)

 N/A Stainless Steel – T18-8, A276

Capacity of Water Discharged to Atmosphere at 25 psi (172 kPa)

 N/A 585 lb/hr

Capacity of Water Discharged to Atmosphere at 50 psi (345 kPa)

 N/A 620 lb/hr

Capacity of Water Discharged to Atmosphere at 75 psi (517 kPa)

 N/A 655 lb/hr

Capacity of Water Discharged to Atmosphere at 100 psi (690 kPa)

 N/A 690 lb/hr

Capacity of Water Discharged to Atmosphere at 125 psi (862 kPa)

 N/A 725 lb/hr

Capacity of Water Discharged to Atmosphere at 150 psi (1034 kPa)

 N/A 760 lb/hr

Weight

 N/A 2.5 kg5 lb
  • 1 3/4" is standard, for another click on Request Information Button