The A8 ductile iron-bodied regulators, with brazed copper couplings, maintain a constant pressure at a control point regardless of fluctuations in load, ambient conditions, or alternate diversions for flow.
Three control functions are available:
Inlet, Outlet, and Differential pressure control. Two control features can be added by incorporating pilot solenoids; either Electric Shut-Off(S) or Electric Bypass (B); also called Wide-Opening.
The valves are an integrated assembly of four modules:
1) A body, which contains no moving parts, but is ordered to suit a particular connection size;
2) A capacity cartridge, which contains both piston and modulating plug, and defines the Port Size;
3) A pilot adapter, which defines the valve function and onto which the Pilot Solenoids providing either the “S” or “B” feature are added as required;
4) The bonnet, containing the Range Spring and adjustment screw, which mechanisms are set for the value of pressure which the valve is to maintain.
Market:
• Commercial Refrigeration
Features and Benefits:
• Inlet and outlet functions feature the wide range pressure setting, 250mm Hg to 27.6bar (10” Hg to 400 psig)
• Regulators for differential function have a range of 0 to 8.3 bar (0 to 120 psi)
• Dual spring for wide range pressure set-points
• Pilot operated for close control at desired set-point
• Excellent regulation at light loads
• Interchangeable capacity cartridges (Except for the A82’s)
• Inlet, outlet or differential regulator functions
• Low pressure drop
• Few moving parts
• Long life stainless steel diaphragms
• Variations available for pilot electric shut-off and pilot electric wide open pressure control
• Manual openings feature
• All service from the top
• Sweat-in-place without disassembly
Application:
• Industrial Refrigeration
• Commercial Refrigeration
• Air Conditioning
• A particular inlet regulator can be applied to control evaporator, condensate, discharge, or defrost relief pressure
• A particular outlet regulator can be applied to control crankcase, receiver or hot gas bypass
• A differential regulator can be applied to maintain oil receiver pressure, or discharge differential, or liquid line differential pressure
TYPE
Various Valve Types- Please Configure Part for Specification
OPERATING STYLE
9mm to 66mm
OPERATING FEATURES
3/8″ to 2-5/8″
EQUALIZER METHOD
15mm to 86mm
PORT SIZE (MM)
5/8″ to 3-3/8″
PORT SIZE (INCH)
7lbs to 18lbs
CONNECTION SIZE (MM)
250mm Hg to 27.6 bar or 0 to 8.3 bar
CONNECTION SIZE (INCH)
10″ Hg to 400 psig, 0 to 120 psig, 0 to 120 psig
PRESSURE RANGE (BAR)
Standard, Electric Wide Open, Electric Shut- Off, Electric Shut- Off and Electric Wide Opening
PRESSURE RANGE (PSIG)
Not Applicable, 110-120VAC ~ 50/60 Hz, 220-240VAC ~ 50/60 Hz, 208VAC ~ 60 HZ
POWER VOLTS/PHASE/HZ
Inlet, Differential, Outlet
WEIGHT (LBS)
Internally Equalized or Externally Equalized