CATALOGUE 201ME JANUARY 2004

CATALOGUE 201ME — Page 19
THERMOSTATIC EXPANSION VALVES
Refrigerant 717 (AMMONIA) - Specifications
TYPE-D
ELEMENT SIZE No. 23, Gasket Joint
Standard Tubing Length 305 cm @
Flange Ring Size – 1-1/8 OD 3/4 ID.
REFRIGERANT
717
CHARGE
TYPE & CAPACITY
Internal
Equalizer
External
Equalizer
1/8" FPT
PORT
SIZE
mm
DISCHARGE
TUBE
ORIFICE
mm
DA-1
DAE-1
0.79
1.59
DA-2
DAE-2
1.59
DA-5
DAE-5
2.78
1.98
DA-10
DAE-10
2.78
4.76
DA-15
DAE-15
3.97
RECOMMENDED THERMOSTATIC CHARGES
for Refrigerant 717 (Ammonia)
SUCTION TEMPERATURE
C 0° C to -20°C
Z - 20° C to -34°C
THERMOSTATIC
CHARGES
AVAILABLE
! STANDARD
CONNECTIONS
Inches FPT
Inlet
Outlet
C-Z-L
1/
2 1/ 2
TYPICAL APPLICATIONS
Chill Rooms, Water
Chillers, Milk Trucks
Locker Plants, Hardening
Rooms, Ice Cream Trucks
! Connections shown are most readily available. Connections shown in Bulletin 10-10 are also
available on special order.
@ Tubing lengths other than standard available upon special order at an additional cost.
NOTE: External Equalizer Connection is required whenever valves are used with
Sporlan Refrigerant Distributors.
TYPE-A
ELEMENT SIZE No. 12, Gasket Joint
Standard Tubing Length 305 cm @
Flange Ring Size – 1-3/4 OD 1-1/4 ID.
REFRIGERANT
717
TYPE & CAPACITY
Internal
Equalizer
External
Equalizer
1/8" FPT
PORT
SIZE
mm
DISCHARGE
TUBE
ORIFICE
mm
AA-20
AAE-20
3.18
7.94
AA-30
AAE-30
3.97
AA-50
AAE-50
4.76
9.53
AA-75
AAE-75
None
AA-100
AAE-100
11.11
None
L
! STANDARD
CONNECTIONS
Inches FPT
Inlet
Outlet
1/2
1/ 2
3/4
3/ 4
The L charge is suitable for use on ammonia valves at all temperatures
above -35°C when applied to evaporators comprising a multiple
system connected to a central refrigerating plant and when one or
more compressors are used and operated continuously from a common
suction line.
The Type L charge is also preferred on systems equipped with evaporator
pressure regulators.
For complete information refer to Bulletins 10-9 and 10-10.
THERMOSTATIC
CHARGES
AVAILABLE
LEVEL-MASTER LIQUID LEVEL CONTROL U.S. PATENT NO. 2,735,272
A Positive Liquid Level Control for Refrigerants
12, 22, 502, 134a and 717 Flooded Systems with
These Benefits:
• Modulated Flow
• No Moving Parts
• Tight Closing
• Not Affected by Turbulence
• Simplified and Economical Installation
• Proven Thermostatic Expansion Valve Performance
DESCRIPTION AND OPERATION
This control is a standard thermostatic expansion valve equipped
with a Level-Master Element. The combination provides a simple,
economical and highly effective liquid level control, with a standard
expansion device. The bulb of the conventional thermostatic element
has been modified to an insert bulb containing a low wattage heater.
The insert bulb is installed in the accumulator or surge drum. When
the liquid level drops, the bulb is surrounded by vapor, the heater
provides the necessary superheat to feed more refrigerant to the
evaporator. As the liquid refrigerant contacts the bulb the effect of
the heater is nullified, and the valve throttles or closes.
INSTALLATION – General
The Level-Master is applicable to any system which has been
specifically designed for flooded operation. The expansion valve is
installed in the liquid line and can be connected to feed into either the
accumulator, the liquid leg of the accumulator or coil header. The
insert bulb has a 1-1/4 male pipe thread and should be installed at the
point where the desired liquid level is to be maintained and must be in
contact with the refrigerant. While generally installed in a horizontal
position, it will operate effectively at any angle or vertical position.
Where the pressure drop between the expansion valve and insert bulb
exceeds 0.14 to 0.21 bar because of line losses due to fittings, accessories,
etc., a valve equipped with an external equalizer connection
should be used. To order add “E” as the sixth letter of type designation.
Example: LMC-HFE-12. There is no operating disadvantage in
using an external equalizer connection on any system.
For complete information refer to Bulletin 60-15.