Temperature & Pressure Plugs and Accessories, Sizes: 1/4" TO 1/2",310 Series
Take pressure or temperature readings quickly
These economy plugs will allow you to take pressure or temperature readings
- quickly and eliminate the need for leaving costly gauges or temperature
indicators on the line.
Applications:
In general these plugs are a time and money saving device which is well
suited for most plant and pipeline systems and is designed to eliminate
gauge cocks and thermometer wells. Hot and chilled water systems, heat exchangers,
pumps, differential readings, air, gas lines, and numerous other applications
are only a few of the areas where these plugs are presently being used.
Valve Materials:
Neoprene is a chloroprene based synthetic rubber and is resistant to
deterioration from waxes, fats, oils, greases, petroleum products, and most
refrigerants.
Nordel is an ethylene-propylene based synthetic rubber and gives excellent
service in hot and cold water and in some applications of low steam. Nordel
is resistant to detergents, phosphate esters, ketone, alcohols, and glycols.
It is not suitable for petroleum products.
Neoprene and nordel are proprietary materials and the information presented
herein is believed to be accurate and reliable. We can assume no liability
for results obtained or damages incurred through the application of this
information. The information is intended as a guide and if in doubt ask!
How to Operate:
These plugs are permanently installed in the line at recommended test
points. The cap protects the valve and provides an additional seal. After
the cap has been removed, either a test thermometer or a gauge adapter with
the proper pressure gauge can be inserted through the two, self-closing
valves in the plug. Readings are made, adjustments or test can be accomplished
and when the probes are withdrawn, the two valves close. The protective
cap is then reinstalled. Tests should be made as quickly as possible since
the valve reseal time is dependent upon time of insertion, time, and pressure.
Slower valve reseal time can be expected at lower temperature and lower
pressures.
Features:
- Available in 1/4" and 1/2" NPT sizes
- Available in long length
- Brass body material for non-corrosive service
- Pressure limits to 1000 psi depending on application
- Neoprene core (red cap) for temperature range of 0-200°F, for use
with natural gas and petroleum products
- Nordel core (blue cap) for temperature range of 0-275°F, for use
with hot and chilled water systems
- Valve core is self-sealing with pressure cup for superior sealing
protection
- Tested by an independent lab indicates no leaks at high or low pressure
310 Series Pressure and Temperature Plugs
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Cap retaining straps are standard on all brass plugs.
Pressure Gauge Probe Adapters
The pressure gauge adapter has a probe constructed of 304 stainless steel.
The probe is 1/8" in diameter and extends 2" (1 1/2" exposed probe) on the
312-500 adapter and 3 1/2" (3" exposed probe) on the 312-500-XL adapter.
The 1/8" diameter probe operates in either the 1/4" or 1/2" Plug. The 312-500-XL
Pressure Gauge Probe Adapter will operate in any of the Plugs.
Pressure Gauge Probe Adapters
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Temperature Gauges
The analog thermometers are constructed of stainless steel, has a 1 3/4"
dial and accuracy within 1/2% over the entire scale. Recalibrations is by
turning the hex nut on the back of the dial case with stem immersed in a
known temperature bath. Digital thermometers have the same specifications
as above but can not be recalibrated in the field.
Pressure Gauges
The 3 1/2" pressure gauge has an ASME B accuracy of 3/2/3% (2% in middle
of scale). It has an adjustable red altitude pointer with a psi and feet
of water scale.
Bi-Metal Pocket Testing Thermometers, 5” Stem, 0.156” (4mm)
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Compound Pressure Gauges
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Pressure and Temperature Test Kits
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