Cashco 2100 Gauge Hatch User Manual
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
I. DESIGN AND FUNCTION
Models 2100 is primarily designed to provide easy
access into storage tanks for gauging and obtaining
samples. May also provide additional pressure relief
as a supplement for normal or emergency venting.
Available with either a non-locking or locking hatch.
No Latch - (Non Locking)
Knob Latch - (Locking)
II. INSPECTION AND STORAGE:
The gauge hatch is carefully packaged to prevent damage or contamination during shipping. Inspect the
equipment when it is received and report any damage to the carrier immediately. The gauge hatch should be
stored with all protective covers in place.
The gauge hatch must be installed in a horizontal
position. The tank nozzle on which the hatch is
mounted should have the same nominal diameter as
the gauge hatch. It is recommended that the tank
nozzle fl ange face be within 1 degree of horizontal.
Minimum clearance between tank roof and face of
the hatch fl ange must be at least equal to the valves’
nominal fl ange bore. Tank nozzle bore must be greater
than or equal to fl ange bore.
The Model 2100 Gauge Hatch is designed to mate with
a 150 lb ASME fl ange. Torque guidelines are provided
in Table 1.
Before installing the 2100 Gauge Hatch remove all
Inspect the gasket seating surface of the tank nozzle
fl ange. It must be clean, free of scratches, corrosion,
tool marks and fl at.
Gauge hatches are furnished with fl at faced fl anges. It
is recommended that they be installed on mating fl at
face fl anges with a full faced gasket. If the fl at face of
the hatch is sealing against a raised face steel fl ange,
a spacer or fi ller ring must be used to fi ll the annular
space of the raised face steel fl ange.
Make sure the gasket is suitable for the application
and is in good condition. For full face gaskets, we
recommend the use of a 1/8-inch Expanded PTFE
Center the gasket within the bolt circle of the tank
fl ange and carefully set the gauge hatch on the fl ange
nozzle and align the bolt holes.
All stud threads must be lubricated to obtain proper
torque results. A washer should be used under each
Install the studs, washers and nuts and tighten nuts
hand tight. Check proper alignment of fl ange faces.
Misalignment of fl ange faces will cause bending
stresses at the fl ange and fl ange joint and damage
may result. Correct any misalignment prior to applying
torque to nuts.