Thief Hatches


Bocais de Coleta

A Thief Hatch is a closable aperture in a tank or vessel.  In the oilfield Thief Hatches are normally used on low pressure and atmospheric tanks. Thief Hatches are used to take samples of the tanks contents, determining the level of the tank and protect the tank from over pressure and excessive vacuum.

BS&B Oilfield Parts Express can supply immediately aluminum Thief Hatches, but other materials are available.These Thief Hatches are also low pressure/vacuum relief vents. 

Some of the applications that Thief Hatches are used for include:

Thief Hatches for Dump Tanks
Thief Hatches for Metering Tanks
Thief Hatches for Gauge Tanks
Thief Hatches for Feeder Tanks
Thief Hatches for Storage Tanks
Thief Hatches for Sour Service
Thief Hatches for Atmospheric Process Vessels

Part # Size Type Weight
76-TH-16-0.4-SW 16 holes-10-3/8" BCD Sweet 10.0 lbs
76-TH-16-0.4-SO 16 holes-10-3/8" BCD Sour 10.0 lbs
76-TH-8-BG-SW Thief Hatch Base Gasket Sweet  00.2 lbs
76-TH-8-BG-SO Thief Hatch Base Gasket Sour  00.2 lbs
76-TH-8-PV-SET Thief Hatch Pressure/Vacuum Gasket Set Sweet/Sour  00.5 lbs
76-8-18-INTE-SW Thief Hatch Internal Rebuild Kit Sweet  01.0 lbs
76-8-18-INTE-SO Thief Hatch Internal Rebuild Kit Sour  01.0 lbs
Note : Other pressure/vacuum settings are available upon request. BCD is Bolt Circle Diameter.


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