Pressure/Vacuum Vents Girard 307/312 Vent Assemblies 407/412 Vent Assemblies MC307B Series 3MVB Series DOT407L Series 407MVB Series Fort Vale 407 307/312 Vent Assemblies Connections Available 407/412 Vent Assemblies R29 Series 24 Series R407 Series 294
307/312 Magnetic Vacuum Breaker 295
307/312 Pressure Vent 296
307/312 Pressure Vent 297
307/312 Pressure Vent 298
307/312 Pressure Vent 299
407/412 Magnetic Vacuum Breaker 300
407/412 Pressure Vent 301
Fort Vale 307/312 Pressure Vent Parts Illustration 4 5 6 8 10 10 1 2 3 7 9 11 Item Description Part No. Kits 1 Blanking plug 10981 SK 2 M6 screw (2) 5111-006 3 M6 spring washer (2) 5113-008 4 Cowl 10964 5 Body top 10964/3 6 Pressure spring - 15 PSIG 5104-515 Pressure spring - 25 PSIG 5104-524 Pressure spring - 30 PSIG 5104-531 7 3 16" grub screw 5121-001 8 Pillar nut 10965 9 M8 half nut 5112-004 10 Vacuum spring pad (2) 10986/2 11 Vacuum spring 2" Hg 5104-964 12 Pressure plate (Viton) 175/0065 Pressure plate (Fortyt) 175/0063 Pressure plate (pressure only) 175/0066 13 Viton pressure seal 5005-102 SK Fortyt pressure seal US5005-101 SK Kalrez pressure seal 5005-325 SK 14 Viton vacuum seal 5005-107 SK Fortyt vacuum seal (hollow) US5005-108H SK Kalrez vacuum seal 5005-119 SK 15 Vacuum poppet 10983/P Vacuum poppet (Viton) 10983/V 16 Lug nut (24/) 10957 17 Lug nut seal (24/) 10329TP 18 Adaptor body (24/) 10956/1 Flanged adaptor (26/) 10963/1 2 1 2" BSP weld-in socket (28/) 600/1000 2 1 2" BSP adaptor (28/) 10966 CNAF/Teflon envelope seal 5005-046 SK 12 14 13 15 Seal Kits: items marked SK included in the following seal Kits: 24/0SK All models Viton / Viton seals 24/1SK All models Fortyt / Fortyt seals 24/7SK All models Kalrez / Kalrez seals Air Charge Kits: 16 US100 US101 60.0 PSIG 100.0 PSIG 17 18 Kalrez is a registered DuPont trademark. Please note: Tank Vents must be fitted with a hose wrench. Hammer blows or any similar impact will impair the unit. Tank Vent Flow Rates Part No. Maximum Set Pressure Vacuum Pressure Flow Rate marked on Valve 24/-2504 25 PSIG 2" Hg 96,000 SCFH at 34.5 PSIG 1750 SCFH at 4" Hg 24/-3004 30 PSIG 2" Hg 109000 SCFH at 39.0 PSIG 1750 SCFH at 4" Hg 24/-3504 35 PSIG 2" Hg 120,000 SCFH at 44.0 PSIG 1750 SCFH at 2" Hg Fort Vale Incorporated 1998. Not to be reproduced in part or in whole without the written permission of Fort Vale Inc. or Fort Vale Engineering Ltd. Fort Vale Incorporated 8560 Katy Freeway, Suite 160, Houston, Texas 77024, U.S.A. Tel. + 1 713 464-9474 Fax. + 1 713 464-0137 Email. ussales@fortvale.com http://www.fortvale.com 302
Fort Vale 307/312 Vacuum Breaker Vacuum Breaker Relief Vent Description The 3" Super Vac Vent is a Vacuum Relief Vent designed to be mounted directly to the top of the tank. The vent is available in two designs; a swivel type, with air inlet and pressure gauge connection facilities, and a fixed type. Both designs have 3" NPS(L) connections, and a weatherproof cowl fitted as standard. The standard internal vent seals are Fortyt (PTFE-encapsulated silicone). Other seal materials are available on request. Construction The Vent is manufactured in 316 L quality stainless steel and precision machined on the latest CNC machine tools. Welds are fully homogeneous to ASME design requirements. Standard finish is a high commercial quality electropolish or machine finish. See Venting Device Accessories page for Gauge and Ball Valve part numbers. Please note: Vacuum Vents must be fitted with a spanner wrench. Hammer blows or any similar impact may impair the unit. 4.83" DIA (Ø122.7) 1.5" A/F (38.1) Connections Available Connections Available Vent Type Connection Side Tappings 81/100## 3" NPT(F) 81B/100## 3" BSP(F) 83/100## 3" NPT(F) Swivel 3 4" NPT & 1 4" NPT 83B/100## 3" BSP(F) Swivel 3 4" NPT & 1 4" NPT Maximum Design Temperature Swivel Assembly Weight Fixed Assembly Weight 400 F (204 C) 6.5lb (2.95kg) 5lb (2.27kg) 4.83" DIA (Ø122.7) 1.5" A/F (38.1) 3" SUPER VAC VENT 6.47" (164.3) 1/4" NPT CONNECTION 3/4" IPS CONNECTION 3" SUPER VAC VENT 2.74" (69.6) 4.04" (102.6) 3" NPS(L) 4.25" DIA (Ø108.0) 5.75" (146.1) 3" NPS(L) 4.0" DIA (Ø101.6) 5.5" (139.7) 83/ SWIVEL ASSEMBLY 81/ FIXED ASSEMBLY Fort Vale Incorporated 1998. Not to be reproduced in part or in whole without the written permission of Fort Vale Inc. or Fort Vale Engineering Ltd. Fort Vale Incorporated 8560 Katy Freeway, Suite 160, Houston, Texas 77024, U.S.A. Tel. + 1 713 464-9474 Fax. + 1 713 464-0137 Email. ussales@fortvale.com http://www.fortvale.com 303
Fort Vale 407/412 Pressure Vent Parts Illustration 1 2 407 4 11 15 8 6 7 9 12 13 3 5 10 14 Item Description Part No. Kits 1 Blanking plug 10978 SK 2 Cap assembly 1760/0040 3 Cowl 176/6100 4 M6 x 6 socket grub screw (3) 5111-009 5 Pressure spring - 25 PSIG 6104-0252 Pressure spring - 30 PSIG 6104-0294 Pressure spring - 36 PSIG 6104-0048 6104-0310 6 Vacuum stem 175/0203 7 Spring pad 175/0201 8 3 32" split pin 5118-016 9 Vacuum spring 2" Hg 5104-873 10 Pressure plate 1760/0065 Pressure plate (Viton) 1760/0066 Pressure plate (Hastelloy) 176H/0060 Pressure plate (pressure only) 1760/0060 11 Fortyt 'O' ring US5005-104 SK Viton 'O' ring 5005-376 SK 12 Vacuum poppet 10983P/2 Vacuum poppet (Viton) 10983V/2 13 Fortyt vacuum seal US5005-108H SK Viton vacuum seal 5005-107 SK 14 Body assembly (A29) 1760/0800 Body assembly (B29) 1760/0300 Body assembly (E29) 1760/0305 Body assembly (F29) 1760/0400 Body assembly (L29) 1760/0875P Body assembly (R29) 1760/0760 Body assembly (W29) 1760/0500 15 Setting locking grub screw 5121-001 Seal Kits: items marked SK included in the following seal kits: USS29/1SK Fortyt (PTFE encapsulated) seals. USS29/0SK Viton seals. Kalrez seals available on request. Air Charge Kits: US100 60.0 PSIG US101 100.0 PSIG PRESSURE SEAL VACUUM SEAL Alternative pressure and vacuum settings are also available. To achieve the flow rates quoted a minimum of a 3.04" (77.2mm) connection must be used. Kalrez is a registered DuPont trademark. 304