Dixon Bayco 2180 Petunjuk Pemeliharaan & Pengoperasian - Halaman 9

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2180 Air Relief Valve Repair Kits

6. Tank pressure should be allowed to rise at a rate of approximately

2 PSI / second. Flow rates greater than this will cause the relief valve

to flutter rapidly. In this condition the valve plate inertia may cause the

apparent opening pressure to be lower than the calibrated value and

will make accurate testing impossible.

7. The relief valve will start to discharge at a pressure slightly below

the rated value, at this pressure some hissing may be evident but the

pressure in the tank should continue to rise (assuming air source

provides a sufficient flow rate). The valve opening pressure (RATED

VALUE) can be read on the tester pressure gauge when the valve

plate (11) reaches an equilibrium (open) position.

If the air supply provides a flow rate in excess of the

maximum flow rate capacity of the relief valve at the relieving

pressure, the valve will not be able to relieve a sufficient volume

of air to prevent tank pressure from continuing to rise. In this

condition serious personal injury and extensive property

damage may occur due to over pressurization of test

components.

Valve Installation

1. Prior to installation, clean any dirt or foreign matter from threading

surfaces.

2. Install air relief valve in positions ranging from vertical (0°) to

horizontal (90°). Do not install valve in inverted position.

3. Install air relief valve with exhaust area positioned so exhaust

vents safely (preferably down as shown in attached diagram). In

horizontal applications, ensure that the small vent hole in the side of

the top cover is facing downward. Downward venting helps prevent

dirt or debris from entering the valve.

4. Apply pipe sealant to threading surfaces prior to installation.

5. Thread the valve into place by hand and tighten using a crescent

wrench (or equivalent) across the hex flats.

2180 AIR RELIEF VALVE RK

877.582.3569