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Model 200 & 300 TVTH Venting Gauge Hatch
Features
Economical Thief Hatch
- The Model 200 Tank Vent Thief Hatch (TVTH) is a budget-conscious choice for integrated thief access and pressure + vacuum relief, offering economical pressure- and vacuum relief for sweet service applications.
- For sour applications, consider the Model 300 TVTH, which has the soft eFKM (sponge viton) gasket for improved sealing performance in sour applications.
Flush Top-Mount design
- The pressure and vacuum relief mechanism operates above the tank roof to maintain functionality if the thief hatch opening is irregular or undersize.
Variety of Pressure Settings
- Both the Model 200 and Model 300 are available with a wide variety of factory-set pressure relief settings.
- Vacuum relief is fixed at 0.4 ozsi for both.
Specifications
Function
Venting Gauge Hatch; Tank Access + Pressure & Vacuum Relief
Temperature Range (TVTH 200)
-40°C to 75°C (polyisoprene)
Temperature Range (TVTH 300)
-26°C to 200°C (eFKM/Viton)
Pressure Relief Type
Spring-loaded pallet
Pressure Relief Range
4 to 32 ozsi (see Relief Settings)
Vacuum Relief Range
0.4 ozsi fixed
Tank Connection
8” API (Fig 1 API 12F)
Related Documents
Brochure
Download BrochureTVTH Operation & Maintenance
Download TVTH Operation & Maintenance GuideVent Sizing Charts
Download Venting Sizing ChartsOrdering Information
TVTH 200 and 300s are stocked in Edmonton, ready to ship 1-day or less.
For Sweet Service
- Specify TVTH 200 Thief Hatch
- Specify Pressure Relief Setting (4, 6, 8, 12, 16 or 32 ozsi)
For Sour Service
- Specify TVTH 300 Thief Hatch
- Specify Pressure Relief Setting (4, 6, 8, 12, 16 or 32 ozsi)
- Specify spring material (302 SS standard, Inconel available)
See part number matrix on the brochure for more information.
Consider completing your Model 200 or 300 TVTH Installation with a Riser, Bolt Kit and Tank Gasket.
