The Sporlan line of evaporator pressure regulating (EPR) valves are designed to provide an accurate and economical means of balancing system capacity and load requirements during "low" loads and/or while maintaining different evaporator conditions on multi-temperature evaporator systems. These valves control evaporator temperature by maintaining evaporator pressure. As the evaporator load increases the ORI valves will Open on Rise of Inlet pressure above the valve's setting to provide more flow capacity to meet the evaporator load. When the evaporator load decreases the valves will modulate closed to maintain the pressure setting of the valve.

Sporlan offers a number of EPR valve types in various sizes, and with optional features to accommodate almost any industry requirement. For more complete information on any of the EPR valve types see your nearest Acal Sales Office or Sporlan Wholesaler.
 
 
 
 
  Maintain minimum evaporator temperature to avoid frost on air coils & provide improved humidity control
 
 
  Evaporator temperature control for food merchandisers (single & multiple evaporator systems)
 
 
  Evaporator temperature control on water chilling units
 
 
  Refrigerant type
 
 
 

Evaporator design capacity
 
 
 

Design evaporator temperature or minimum evaporator pressure
 
 
 

Available pressure drop
 
 
 

Allowable evaporator pressure change (only applies to direct acting models)
 
 
  VALVE TYPES: ORIT-6 and ORIT 10
 
   
  Features
   

• Direct acting
• Adjustable
• Hermetic construction (no gaskets or seals)
• Corrosion resistant construction
• Inlet pressure tap (standard)
• Inlet strainer (standard on ODF models)
 
 

These direct acting EPRs are offered in two sizes. The direct acting design although economical requires an evaporator pressure change above the minimum evaporator pressure setting to provide the rated
flow capacity. The nominal ratings are based on an 0.55 bar evaporator pressure change for the 0/3.45 bar(0/50 psig) adjustment range, and a 0.83 bar change for the 2.07/6.90 bar (30/100 psig) adjustment range. Valves should be selected for the desired maximum variation in evaporator pressure using the capacity multipliers below.

Allowable Evaporator
Pressure Change-bar		 0.14 0.28 0.41 0.55 0.69 0.83 0.97
Capacity
Multiplier
ORIT-6,
10-0/50
0.3 0.6 0.8 1.0 1.2 1.3 1.4
ORIT-6
10-30/100 		- 0.2 0.6 0.7 0.9 1.0 1.1
 
 
  Specifications
 
   
Valve Type
Port Size
mm
Adjustment
Range
Connections
ORIT-6
19.1
0/50 or 30/100 psig

0/3.45 or 2.07/6.90 bar
1/2 & 5/8 SAE Flare
5/8, 7/8 & 1-1/8 ODF Solder
ORIT-10
30.9
7/8, 1-1/8 & 1-3/8 ODF Solder
 
 
 
 
  VALVE TYPES (S)ORIT-12, -15, and -20
 
  Features
   

• High side pilot for improved temperature control and low P operation
• Adjustable
• Optional solenoid "stop" feature to close valve during defrost
• Normally open design allows system evacuation without manual operator
 
 

These EPRs are pilot operated using "high side" pressure and require a pilot supply connection from the compressor discharge to operate. They are designed to be "normally open" providing an unparalleled ability to operate with virtually no suction line pressure drop.

The pilot operated design does not require the "allowable evaporator pressure change" necessary with the direct acting models, and can be simply sized based on design evaporator temperature and available pressure drop across the valve at full load conditions.
 
 
 

Specifications
     
   
Valve Type
Port Size
mm
Adjustment
Range
Standard Coil Ratings
*MKC-1
Connections ODF Solder
inches
Volts/Cycles
Watts
(S)ORIT-12
19.8
0/100 psig
0/6.90 bar
24/50-60
120/50-60
208-240/50-60
120-208-240/50-60
10
1-1/8
(S)ORIT-15
25.4
1-3/8
(S)ORIT-20
33.3
1-5/8

*Available with junction box or conduit boss at no extra charge.