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res hev valve clark johnson co

Refrigerant Shut-off Valves

 

RS- Hand Shut- Off/ Expansion Valves

parker refrigeration Clark Johnson Co

The RS Shut- off/ Expansion Valves were designed and built to maintain reliability both in their seating and back seating functions.

  Product Overview

     Specification

he complete Industrial Refrigeration line of Hand Shut-Off and Expansion Valves with bolt-on bonnets are designed and built to maintain reliability both in their seating and back seating functions. This entire line is supplied with stainless steel stems for maximum corrosion resistance and back seating capability. A unique carbon filled PTFE seat is standard throughout the line, lending durability to the seating surface. In addition, a dual O-ring stem packing design along with a stem packing seal is standard on all valves 1⁄4” thru 12” (Shut- Off) and ¼” thru 2” (Expansion). This innovative design seals both the valve stem and bonnet bore with independent O-rings, which are captured in a carbon PTFE carrier. The addition of the packing provides for backup sealing capability in the unlikely event of an O-ring failure. A packing nut design with either 1⁄4” or 5⁄16” flats provides a generous wrench engagement area, with little likelihood of “rounding” the flats. With the O-ring cartridge used in all valve bonnets, there will typically be no need to loosen the packing nut when opening or closing a valve. In most cases, stem resistance will be negligible, allowing the valve to be easily repositioned.

The extended bonnet is available for globe style valves in the Tee body configuration and in angle style bodies. Valves are available with either hand wheel or seal cap. These caps are exclusive to this series of valves and should not be exchanged with seal caps from other R/S service valves.

 

Markets:

• Industrial Refrigeration

• Commercial Refrigeration

 

Hand Shut- Off Valve Features and Benefits:

• ASTM 352 LCB Cast Steel Body 6 – 300 mm (1⁄4” - 12”)

• Fluid Temperature Range: -50° C to 204° C (-60° F to 400° F)

• Type 303 Stainless Steel Stem and packing nut; 304 Stainless Steel Bolts

• Reliable Back Seating

• Complete Line of Bolted Bonnets

• 25% Carbon Filled PTFE Seat

• Linear flow “Y” Pattern Globe

• Bodies (11⁄4” - 12”) for Low Pressure Drop

• Extended Bonnets for Insulation

• Hand wheel and Seal Cap Interchangeable on Same Valve

 

Hand Expansion Valve Features and Benefits:

• ASTM 352 LCB Cast Steel Body (1/4” thru 2”)

• Maximum Safe Working Pressure 400 PSIG

• Fluid Temperature Range: -50°F to +300°F

• 300 Series Stainless Steel Stem

• 300 Series Stainless Packing Nut

• Optional Stainless Steel Bonnet Bolts

• Reliable Back Seating

• Bolted Bonnets

• 25% Carbon Filled PTFE Seat (1/4” thru 2”)

• Available Connections:

o 1/4” thru 1-1/2”, Screwed End

o 1/4” thru 2”, Socket Weld

o 1-1/4” thru 2”, Butt Weld

• Globe Body - Tee and Angle Styles

• Extended Bonnets For Thicker Insulation Optional

 

Application:

• Ammonia

• Fluorocarbons

•  Nitrogen

• Carbon Dioxide

 

MAXIMUM PRESSURE (BAR)

27.6 bar

 

MAXIMUM PRESSURE (PSIG)

400 psig

 

MINIMUM FLUID TEMPERATURE (C)

-50°C to -29°C

 

MINIMUM FLUID TEMPERATURE (F)

-60°F to -20°F

 

MAXIMUM FLUID TEMPERATURE (C)

149°C to 204°C

 

MAXIMUM FLUID TEMPERATURE (F)

300°F or 400°F

 

FLOW COEFFICIENT (CV)

Not Applicable or Please Reference Associated Documentation

 

VALVE STYLE

Hand Shut- Off or Hand Expansion

 

BODY STYLE

Globe T, Globe Y, Angle

 

PORT SIZE (MM)

6mm to 300 mm

 

PORT SIZE (INCH)

1/4" to 12"

 

CONNECTION STYLE

Socket Weld, FPT, Butt Weld- Weld Neck

 

BONNET

Standard Bonnet or Extended Bonnet

 

HANDLE

Seal Cap or Hand Wheel

 

PLATING

No Plating or Plated

 

BODY MATERIAL

Cast Steel (A-352 GR, LCB)

 

BONNET MATERIAL

Forged Steel, LCB Cast Steel, Ductile Iron, Carbon Steel

 

STEM MATERIAL

304 Stainless Steel

 

PACKING MATERIAL

25% Carbon Filled PTFE

Clark Johnson Company, Inc.       2016