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ELECTRONICALLY CONTROLLED
AR TWORK/MECH AR T/ Pressure C - 29
PROPORTIONING VALVES
PV Series
U Programmable Direct- or
Reverse-Acting Control
U Precision Control is
Achieved via a 10-Bit
Converter Controlling
a 200 Stepper
Revolution Motor
U Rugged Construction for
Industrial Applications
U External Safety Override
Contacts to Open/Close
Valve
U NEMA 4 (IP65) Rating
for Outdoor Use
U Ideal for Liquid and Gas
Applications
An electronically controlled
proportioning valve (ECV) will take
an electrical input signal (usually
4 to 20 mA) and proportion the
amount of flow through a pipe
from fully closed to fully open.
The OMEGA® ECV valve features
programmable direct-acting or
reverse-acting control. Direct-acting
means that, as the current signal
rises, the valve allows more flow,
while reverse-acting will decrease
the flow rate with an increasing
current signal.
These units can also be
programmed to sense a failure
in the current loop and fully
close/open the valve when the
signal level drops below 3.5 mA.
Dry-contact remote switches can
be used in conjunction with the
standard current signal to provide
an alarm signal that fully closes/
opens the valve. An internal 5 Vdc
signal is used to sense the state of
the external switches.
The rugged epoxy-coated aluminum
package ensures NEMA 4X
(IP66) protection for the powerful
microprocessor and servo actuator.
Internally, a 10-bit A/D converter is
positioning a 200 step/revolution
stepper motor for precise flow.
omega.com/px750
omega.com/px750
PX750 PRESSURE
TRANSDUCER
FOR FLOW
MEASUREMENT
Available with brass or
stainless steel body.
PV14-SS,
shown much smaller
than actual size.
WITH 4 to 20 mA PID OUTPUT
The stepper motor is directly
connected to the valve stem
without gearing, thereby eliminating
backlash (hysteresis) effects. The
valve can also be manually controlled
with a screwdriver.
omega.com/cni_series
omega.com/cni_series
CNI853 CONTROLLER
omega.com/
omega.com/
fpt6100
fpt6100
FPT6100
PIT OT TUBE T O
TRANSFER
PRESSURE
T O PX750
Flow
U12Y100
POWER SUPPLY
PV SERIES
ELECTRONICAL Y
CONTROLLED
PROPOR TIONING
V AL VE
L-19
Page 2
WT = + 4-20
BK = - 4-20
R = + Ex
R/W = - Ex
( Does not operate
if 4-20 is reversed)
GN to Blue = Full Open
G/W to Blue = Full Close
PV series valve (with cover removed).
SPECIFICATIONS
Electronics
Power Requirements: 12 Vdc @ 3 A
Caution: Using an underrated power
supply will damage the unit.
Inputs: 4 to 20 mA control signal
(250 Ω impedance) and dual
external switch contact sensing via
5 Vdc signal
Control Modes: Direct or reverse,
full or split range, high or low range,
fail condition open or closed
Adjustments: Zero offset ±0.5 mA
Operating Temp: 0 to 49°C
(32 to 120°F)
Enclosure: NEMA 4X (IP66),
epoxy-painted aluminum
Connections:
(16" 22 AWG pigtail leads)
To Order
1
⁄2 NPT conduit
Visit omega.com/pv14 for Pricing and Details
Actuator
Type: DC step motor, 200 steps/rev,
4 rev travel
Resolution: 200:1 (0.5%)
(4 steps increment)
Speed: 45 rpm (5 s full stroke) except
3
⁄4" valves: 18 rpm (12 s) full stroke
Torque: 57.5 in-oz (188 in-oz
3
⁄4 valve)
Valve
Type: In-line globe
Temp: -18 to 120°C (0 to 250°F)
Pressure: 120 psi max (70 psi on
Max Flow: GPM = Cv (∆P/SG)
for gases, use standard equation found on
page L-27
Wetted Parts: Ethylene propylene rubber
O-ring, PTFE washer and valve body
(brass models have 303 SS internal trim)
3
⁄4" valve)
1
⁄2 liquids;
COMPLETE UNIT:
Dimensions: 216 H x 185 W x 137 mm D
(8.5 x 7.3 x 5.4")
1⁄2 Valve: 229 H x 185 W x 137 mm D
(9 x 7.3 x 5.4")
3⁄4 Valve: 305 H x 203 W x 191 mm D
(12 x 8 x 7.5")
Weight: 3.2 kg (7 lb);
1
⁄2 valve: 4.5 kg
(10 lb); 3⁄4 valve: 8.2 kg (18 lb)
U12Y100 SPECIFICATIONS:
Power Supply: 120 Vac or 240 Vac
@ 50 to 60 Hz, switchable
Output: 12 Vdc unregulated @ 3 A
Connections: 2.1 m (7') power cord,
3-pin DIN connector with 1.8 m (6')
3-conductor 22 AWG, pigtail leads
Dimensions: 102 W x 152 L x 76 mm H
(4 x 6 x 3")
Weight: 1.4 g (3 lb)
VALVE FITTING MAX FLOW BODY
MODEL NO. SIZE mm (in) SIZE CV @ 50 psi MATERIAL
PV14-B 6.35 (
PV14-SS 6.35 (
PV516-B 7.94 (
PV516-SS 7.94 (
PV38-B 9.53 (
PV38-SS 9.53 (
PV12-B 12.70 (
PV12-SS 12.70 (
PV34-B 19.05 (
PV34-SS 19.05 (
1
⁄
4)
1
⁄
4)
5
⁄
16)
5
⁄
16)
3
⁄
8)
3
⁄
8)
1
⁄
2)
1
⁄
2)
3
⁄
4) 1 NPT 6.5 45 GPM Brass
3
⁄
4) 1 NPT 6.5 45 GPM 316 SS
1
⁄
2 NPT 0.6 4 GPM Brass
1
⁄
2 NPT 0.6 4 GPM 316 SS
1
⁄
2 NPT 1.0 8 GPM Brass
1
⁄
2 NPT 1.0 8 GPM 316 SS
1
⁄
2 NPT 1.7 12 GPM Brass
1
⁄
2 NPT 1.7 12 GPM 316 SS
3
⁄
4 NPT 3.5 24 GPM Brass
3
⁄
4 NPT 3.5 24 GPM 316 SS
ACCESSORY DESCRIPTION
U12Y100 Unregulated power supply 12 Vdc, 3 A
Comes complete with operator’s manual.
Ordering Examples: PV14-B, 4 GPM brass proportioning valve.
U12Y100, unregulated power supply.
VALVES AND REGULATORS
L
L-20
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