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3” ANSI Flange GEILINER® Vent

FUNCTION
Girard Equipment’s Teflon® Lined Pressure Relief Vent is
designed to protect against aggressive ladings that normally
chemically attack stainless steel. All wetted surfaces are lined
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with a ⁄8” thick Teflon® liner. The valve seat seals on a Teflon®
encapsulated silicone O-Ring. This O-Ring provides complete
chemical resistance and a bubble-tight seal. The vent is designed
to be easily removed from the tank for inspection and cleaning.

MODEl DESCRIPTION
DOT 3x407- AFTl Vent to mount on a 3” ANSI, 4-Bolt
(GA40110) (25# MAWP) Flange. Supplied with a Teflon®
liner and a valve seat.
(When ordering, please specify
pressure setting.)

Also available as a pressure/vacuum combination vent.
(see page 16)
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3” ANSI Flange, 4-Bolt

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Teflon® liner doubles as the inlet gasket.
ITEM PART NO. DESCRIPTION
1 GB19000 Upper Housing Hole Plug
2 GB03020 Rain Cover Retaining Screw
8-32 x 3/8 (NEW for 2016, see p. 42)
3 GB03010 Vent Rain Cover
MATERIAlS OF CONSTRUCTION 4 GB04003 Upper Housing, 25#

All metallic parts 316L Stainless Steel 5 GB05200 Pressure Spring - 25#, 30#
MAWP Vents, all others
O-Ring Teflon® Encapsulated Silicone please consult with Girard
Valve Seat White Teflon®
6 GB25010 Spring Retainer
Liner White Teflon®
7 GB06030 Poppet Geiliner®
8 GB08005 Teflon® Seat Geiliner®
9 GB07000 Teflon® O-Ring Pressure

10 GB21010 3” ANSI Teflon® Lined Lower Housing

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