Jordan Valve Mark ED & ET Series Globe Style Control Valve (1-6) - Manual (Page 6)

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M
akIng
u
p
s
teM
c
onnectIon
Direct Acting Actuator
Refer to Figure 5 for part descriptions used in the
following procedure.
1. Move the valve plug to the closed position.
2. Thread stem locknuts onto the stem and set
the travel indicator disc on these nuts.
The cupped portion of the indicator disc
should face downward.
3. Move the valve plug stem up the required
travel and attach the stem connector. Make
sure there is full engagement of the actuator
stem threads. Place the two cap screws in the
stem connector and tighten only slightly at
this time. Position the travel indicator disc
against the bottom of the stem connector by
tightening the stem lock nuts slightly.
4. The travel indicator should indicate the valve
to be wide open with no pressure on the
diaphragm. If it does not, loosen the screws
that hold the travel indicator scale and move
the scale to the position required.
5. Apply varying pressures to the diaphragm
case and observe the valve travel. Make
certain that the valve plug seats on the seat
ring.
Note: If the travel is not correct on units with plain
or extension bonnets, the travel can be corrected
by screwing the valve plug stem either into or out
of the stem connector. Always use a wrench on the
lock nuts to turn the stem. Do not use pliers or a
pipe wrench directly on the stem itself. Make sure
not to turn the valve plug while it is on the seat.
Reverse Acting Actuator
Refer to Figure 5 for part descriptions used in the fol-
lowing procedure.
1. Move the valve plug to closed position.
2. Thread stem locknuts onto stem then set the
travel indicator disc on these nuts. The cupped
portion of the indicator disc should face down
ward.
3. Move the valve plug stem up the required
travel and attach the stem connector. Make
sure there is full engagement of the actuator
stem threads. Place the two cap screws in the
stem connector and tighten only slightly at this
time. Position the travel indicator disc against
the bottom of the stem connector by tightening
the stem lock nuts slightly.
4. The travel indicator should indicate the valve to
be wide open with non pressure on the
diaphragm. If it does not, loosen the screws
that hold the travel indicator scale and move
the scale to the required position.
5. Apply varying pressures to the diaphragm
case and observe the valve travel. Make cer-
tain that the valve plug seats on the seat ring.
Note: If the travel is not correct on units with plain
or extension bonnets, the travel can be corrected
by screwing the valve plug stem either into or out
of the stem connector. Always use a wrench on the
lock nuts to turn the stem. Do not use pliers or a
pipe wrench directly on the stem itself. Make sure
not to turn the valve plug while it is on the seat.
p
arts
o
rderIng
A serial number identifies every Mark E Series valve
body-bonnet assembly, which can be found on the
front of the valve. Please refer to this number when
contacting your Jordan Valve Representative.
Figure 5: Actuator Mounting
M
ark
ED
anD
ET S
EriES
1-6
inch
G
lobE
S
TylE
c
onTrol
V
alVES