Product Overview

Description
A new line of solenoid valves to control secondary coolants has
been developed for supermarket systems. These fluids include
propylene glycol, ethylene glycol, Pecasol 50, Dynalene HC-40,
and others. Parker’s valve is the only valve designed to meet the
requirements of both medium and low temperature applications
encountered in supermarket applications.
What is Secondary Cooling?
In a secondary coolant, or secondary loop system, a chilled solu-
tion, such as propylene glycol, is circulated throughout the system
rather than liquid refrigerant. Secondary coolant systems are
advantageous because they can eliminate liquid refrigerant and
suction gas lines running through a store. This reduces installation
costs and labor, and eliminates costly refrigerant leaks. Also, PVC
tubing can be used, rather than the heavier, more expensive cop-
per tubing normally used in traditional systems. Another benefit is
more efficient defrost cycles with less potential product damage.
Minimum Pressure Drop
In order to achieve good heat transfer through a coil surface,
minimizing pressure drops throughout the system is critical. Parker
secondary coolant valves do not require a minimum pressure to
operate.* This is because of the valve’s unique “hung diaphragm”
design. Other pilot operated valves require some minimum pres-
sure drop to open the diaphragm or piston. This minimum pressure
drop is a pressure loss, and means less pressure available at the
coil. When using Parker’s secondary coolant valves, valve size can
be maximized, minimizing the pressure drop.
*The 34E24C2-R1021E is pilot operated and requires a minimum of 5 psi.
It uses the AF-4 series coil.
Specifications - Valve Description
2 way hung diaphragm normally closed valve with brass forged
body and EPDM (Ethylene Propylene) trim material.
Maximum Fluid Temperature: -40°F to +180°F
Valve Body: Forged brass
Connections: ODF Copper
Plunger and Pole Piece: Stainless Steel
Enclosing Tube: Stainless Steel
Springs: Stainless Steel
Diaphragm: EPDM
Seals: EPDM
Safe Working Pressure: 10-26 Series = 250 PSIG
34 Series = 225 PSIG
Specifications - Coil
Type: NEMA 4, 4X (3 wire leads) Power: CF5 is 11 watts; AF4 is 6 watts
Power Consumption: Inrush - 53 va holding - 20 va
Capacities - For Liquid
Q
gpm
- C
v
January 2013 / Bulletin 30-10-1
Feature Advantage Benefit
Ethylene propylene diaphragm and seals. Compatible with secondary fluids. Suitable for both medium and low temperature systems.
NEMA 4 coils. Protects against water, icing and vibration. Less maintenance, more dependability.
Unique hung diaphragm construction No minimum pressure differential required. Pressure drop (loss) is minimized.
Available in sizes 5/8” to 2-1/8” ODF. A valve for every common line size. Easily matches up to system piping.
Copper ODF extended connections.
Eliminates need for pipe threaded connections and
associated leaks.
Allows easy brazing and faster installation.
For Supermarket
Refrigeration
Sizing Valves
Valve PIN
Connection
Size
Cv
Pressure
Drop
GPM
10E23C2-R1021E
10E23O2-R1021E
5/8” 4
0.5 2.8
1 4.0
2 5.7
3 6.9
14E23C2-R1021E
14E23O2-R1021E
7/8” 5
0.5 3.5
1 5.0
2 7.1
3 8.7
18E23C2-R1021E
18E23O2-R1021E
1-1/8” 5
0.5 3.5
1 5.0
2 7.1
3 8.7
22EH5C2-R1021E
22E25O2-R1021E
1-3/8” 12.2
0.5 8.6
1 12.2
2 17.3
3 21.1
26EH5C2-R1021E
26E25O2-R1021E
1-5/8” 12.2
0.5 8.6
1 12.2
2 17.3
3 21.1
34E24C2-R1021E
34E24O2-R1021E
2-1/8” 22.5
0.5 15.9
1 22.5
2 31.8
3 39.0
Solenoid Valves for Secondary Coolant Glycol
*Minimum order quantity may be required.
Coil Voltages - 10E, 14E, 18E, 22E, 26E Normally Open or
Normally Closed and 34E Normally Open Series Valves
Voltage Wire Length Coil Part Number
24 VAC
18”
CF5C01-R1021
120 VAC CF5C05-R1021
208 VAC CF5C10-R1021
240 VAC CF5C15-R1021
Coil Voltages - 34E Normally Closed Valve Only
Voltage Wire Length Coil Part Number
24 VAC*
18”
AF4C01-R1021
120 VAC AF4C05-R1021
208 VAC AF4C10-R1021
240 VAC* AF4C15-R1021*
∆ P
SG
√
SG = Specific gravity
Capacity table based on SG of water @ 1
Bulletin 30-10-1, January 2013 supersedes Bulletin 30-10-1, December 2010 and all prior publications.