Factory test procedure for mk86 ambitemp – Jordan Valve Mark 86 Series - Ambient Temperature Regulator User Manual

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3170 Wasson Road • Cincinnati, OH 45209 USA

Phone 513-533-5600 • Fax 513-871-0105

Bulletin IM-MK86-0210

point to the desired temperature on the tempera-
ture set point scale. (This method of setting the
Ambitemp II is quite accurate ± 2-3°.)

For precise setting at temperatures other than 32°F, the
actuator must be enclosed by an insulated housing (such
as a split box). A thermometer is inserted to indicate
the temperature inside this enclosure. By using a Vortex
Tube arrangement, the desired “Ambient” Temperature
(at which the Ambitemp II is to be wide open) can now
be simulated. Once stabilized, turn adjusting wheel until
seats are wide open; then reset set point indicator scale
as previously described.

Factory Test Procedure For

MK86 Ambitemp

First the body and cap are hydrostatically tested at a
pressure of 1½ times the maximum working pressure of
the valve.

The valve is then assembled and sent to the final test de-
partment where it is tested as follows:

All nuts and bolts are checked for tightness.

The valve is checked against the written order to

assure the proper size, action, range, and Cv.
The valve is then clamped in a test fixture and 100

psi of air pressure is applied to the inlet side of the
valve.
With 100 psi of inlet air pressure and the outlet

open to atmosphere, the valve is stroked (see note
1) several times.
The valve is then stroked to the closed potion,

the outlet of the test fixture is closed and the seat
leakage is checked. Seat leakage is measured by
means of a flow meter calibrated in standard cubic
feet per hour (SCFH). All Jordan Valves have a leak-
age rate of .01 percent of the rated flow capacity or
less per class IV of ANSI B16.104.
The valve being tested is then stroked to the open

position allowing both the cap and the body to be
pressurized.
All pressure containing areas are checked with a

soap solution for external leakage.
The valve is then set to the customer specified set

point (see note 2).
The set point indicator is now installed. Because

the set point indicator is installed after the valve is
tested and set, we are insured of the correct cali-
bration for this particular valve.

NOTE 1: To stroke the Mark 86 the actuator must be
cooled to below the valve set point. To do this we use a
vortex and insulated housing around the actuator. This
vortex tube is capable of cooling the entire actuator as-
sembly to approximately 0º F.

NOTE 2: To set the Mark 86, the probe from the digital
thermometer is inserted into the insulated housing sur-
round the actuator assembly. The actuator assembly is
brought to the temperature required by the set point.
When this temperature is reached, the adjustment screw
is turned so that the valve is fully open.