Brochure

Parker Hannifin Corporation
Climate & Industrial Controls Group
Cleveland, OH
Flo-Con Pressure Regulators and Valves
286
Catalog CIC-2003-1/US
Product Overview
Product Overview
With more than 30 years of commercial refrigeration control valve design and manufacturing experience, the
Parker Refrigerating Specialties product line has evolved to include a wide variety of regulators, solenoid valves,
and in-line check valves designed for precise and reliable control in both supermarket and field built halocarbon
systems. Included in this expanded family of refrigeration components are high capacity pilot operated regulators
and solenoid valves in extended port and connection size combinations. The highest capacity non-flanged
regulators and solenoid valves available in the industry are included in this unique combination of control valves.
Considering their application in larger systems, one control valve may be used in place of a competitor's parallel
valve combination in some instances.
Parker Refrigerating Specialties commercial pilot operated regulators are modular by design, and are superior
to direct operated valves in their ability to maintain a precise control of set point, despite changes in load. With a
parabolic plug design as a standard feature throughout this line of regulators, a linear relationship exists between
the main valve opening and the valve's capacity. The result is a steady set point and precise control, even at
varying or low flow conditions.
As an added benefit, Parker Refrigerating Specialties pilot operated solenoid valves in the SC and S8 series
utilize the same bodies, cartridges, and solenoid coil assemblies as their (S)PORT and A8 regulator counterparts.
In many instances, capacities can be changed by simply changing cartridges, a feature common throughout both
lines of regulators and solenoid valves.
Parker Refrigerating Specialties product bulletins are also available for all valve types covered throughout this
section . Product bulletins cover a variety of details such as dimensions, cutaway views, and specific information
related to valve operation, which is not included within the context of this catalog. Product bulletin numbers are
referenced in the selection guide matrix on page 284 and are readily available upon request.
A8 Pressure Regulators
Initially introduced as the A7, the current A8 pressure regulator is designed with flexibility
in mind, covering both high and low side applications in commercial refrigeration sys-
tems. A dual range spring, standard in all A8 regulators (with the exception of the
differential version), allows the valve to control at any set point within a 10" Hg to 400 psi
(250mm Hg to 27.6 bar) pressure range. Three body sizes define the A8 line. The A8A is
the smallest of the three, the A81 covers the mid-range applications, and the A82 is the
largest. Along with the standard A8 inlet pressure regulator, optional variations include
inlet regulators with electric shut off features (A8AS, A81S, A82S) and wide opening or
bypass features (A8_B). In addition, outlet pressure regulators (A8_OE), outlet regulators
with electric shut-off features (A8_OES), differential pressure regulators (A8_L), and
differential regulators with wide opening features (A8_BL) round out the product line.
Eight different “port” sizes (or capacity cartridges) are available in the A8 family of regulators with connection sizes
ranging from 7/8" (22mm) up to 2-5/8" (66mm). All A8 regulators are ductile iron bodied valves with brazed copper
couplings. Valve cartridges are also made of ductile iron. A water resistant class “H” coil enclosed in a general
purpose coil housing is supplied as standard with any A8 regulator version. Solenoid coils can be supplied either
with twin leads or with DIN connectors.
(S)PORT / (S)PORT II Pressure Regulators
The (S)PORT and (S)PORT-II pressure regulators are a unique line of valves designed
specifically for evaporator pressure control in commercial supermarket applications. All
(S)PORT regulators are designed to control in a pressure range of 10" Hg to 120 psig
(250mm Hg to 8.3 bar). The original (S)PORT, introduced several years ago, continues to
be manufactured with a ductile iron body and cartridge assembly. The (S)PORT-II, a
more recent addition to the line, is made of completely corrosion resistant materials in-
cluding aluminum bronze bodies and cartridge assemblies, and stainless steel bolts and
adjusting stems. (S)PORT regulators are available in three common versions typically
applied on low side applications: A standard upstream pressure regulator, or PORT, a
Flo-Con Pressure Regulators and Valves