Hooksett Fire –Rescue Department
Specifications for Stainless Steel Pumper Tanker Bid # 11-05
21
Bidder
Complies
Yes No
MASTER GAUGES
The pump master vacuum and pressure gauges shall be 4-1/2" in diameter with white dial face
gauges with black lettering and markings.
The master vacuum gauge shall be a compound style gauge with a vacuum/pressure range of -30" - 0
- 400 psig with the dial face of the gauge labeled in black INTAKE.
The master pressure gauge shall be provided with a range of 0-400 psig and the dial face of the
gauge labeled in black DISCHARGE.
The gauges shall be fluid filled with pulse and vibration dampening "Interlube" to lubricate the internal
mechanisms to prevent lens condensation and to ensure proper operation to -40 degrees F. The
cases shall be temperature compensated with an internal breathing diaphragm to permit fully filled
cases and to allow a rigid lens with a distortion free viewing area. The gauge accuracy for the gauge
shall be plus or minus 1% of full scale per ANSI B40.1, Grade 1A.
To prevent internal freezing and to keep contaminants from entering the gauge, the stem and bourdon
tube shall be filled with low temperature oil and be sealed from the water system using an isolating
diaphragm located in the stem. A bright metal bezel shall be supplied for resistance to corrosion and
to protect the lens and case from damage.
MASTER GAUGE TEST PORTS
Adjacent to each gauge there shall be a pressure tap to provide simultaneous reading of the vacuum
and pressure exerted on the individual gauge.
PRESSURE GAUGES
Each line pressure gauge shall be mounted immediately above the control for the corresponding
valve. The individual line pressure gauges for the discharges shall be 2-1/2" in diameter with white
dial face gauges with black lettering and markings. The gauges shall be a compound style gauge with
a vacuum/pressure range of 0 - 400 psig.
The gauges shall be fluid filled with pulse and vibration dampening Interlube to lubricate the internal
mechanisms to prevent lens condensation and to ensure proper operation to -40 degrees F. The
cases shall be temperature compensated with an internal breathing diaphragm to permit fully filled
cases and to allow a rigid lens with a distortion free viewing area. The gauge accuracy for the gauge
shall be plus or minus 2% mid-scale, plus or minus 3% balance, per ANSI B40.1, Grade 1A.
To prevent internal freezing and to keep contaminants from entering the gauge, the stem and bourdon
tube shall be filled with low temperature oil and be sealed from the water system using an isolating
diaphragm located in the stem. A bright metal bezel shall be supplied for resistance to corrosion and
to protect the lens and case from damage.
PUMP OPERATION HOURMETER
A pump hourmeter shall be supplied. The hourmeter shall be environmentally sealed to prevent
moisture from entering the instrument. The face shall provide a display of the total cumulative hours of
pump engagement. The hourmeter shall be protected by being located inside the pump module.
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