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The Type S4W, S4A, S4AD, and S4X are pilot operated valves made for easy field servicing.

Parker’s S4 solenoids are the refrigeration industry’s standard for solenoid valves and have provided decades of safe and reliable operation.

These valves are highly configurable and can be provided with flanges for Socket Welding, Butt Welding, ODS connections, and Threaded connections.

The S4 is offered in sizes from ¾” (DN20) to 8” (DN200). These valves may be opened by means of the manual opening stem for servicing or in case of electrical power failure.

As the S4 valves up to 4” feature a flanged connection they may be easily removed from the system for servicing. The S4 valves are pilot operated and require a minimum 0.21 bar (3 psi) pressure drop to fully open. 

The S4AD is a spring closing, pilot operated, dual-position solenoid valve which is crucial for evaporator control groups that use hot gas defrost. 

The dual position function of the S4AD allows the system to equalize before fully opening and can prevent liquid hammer. The S4X is an explosion proof hazardous environment type solenoid carrying a NEMA Type 4 and 7 classification.
Features
  • S4A
    • Standard Coil Housing Meets NEMA 3R and NEMA 4- Rain Tight
    • Coil Housing Surpasses NEMA Salt Spray Test
    • Plunger-Needle Assembly Same for S4A, S5A, S6N, S6A, S8F
    • Molded Class “F” Coil Construction
    • Same Coil Fits Most Refrigerating Specialties Solenoid Valves
    • Pilot Light Available
    • Stainless Steel Needle
    • Manual Opening Stem
    • Design Pressure (MRP): 28 bar (400 PSIG)
  • S4W
    • Cast Steel Body–Strong, Light Weight
    • Welds Directly In The Line-No Flanges
    • Removable Seat-Serviceable From Top Side
    • Maximum Opening Pressure Difference (MOPD): 21 bar (300 psig)
    • PTFE Pilot Seat
    • Streamlined Fluid Flow Pattern
    • Pilot Solenoid Parts Are Same As Used With Most Other R/S Solenoids
    • Design Pressure (MRP):27.6 bar (400 psig)
    • Manual Opening Stem
  • S4AD
    • Prevents the damaging effects of vapor propelled liquid
    • Combined use as a hot gas and soft gas valve
    • Integrated S6A Pilot Solenoids
    • Standard Coil Housing meets NEMA 3R and NEMA 4- Rain Tight
    • Reduced installation costs
    • Pilot light available
    • Manual Opening Stem
    • Maximum Rated Pressure (MRP): 27.6bar (400psig)
  • S4X
    • Explosion Proof
    • Hazardous Environment Type
    • Standard Coil Housing meets NEMA Type 4 and 7

1 - 12 of 1,230 Part Numbers
S4A200NF20B1XSN
S4A200NF20B1XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 120AC~60Hz-Leaded Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20B2XSN
S4A200NF20B2XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 120AC~60Hz-Leaded Red LED Pilot Light Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20B3XSN
S4A200NF20B3XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 120AC~60Hz-Leaded Green LED Pilot Light Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20B4XSN
S4A200NF20B4XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 120AC~60Hz-DIN Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20D1XSN
S4A200NF20D1XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 208AC~60Hz-Leaded Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20F1XSN
S4A200NF20F1XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 230AC~50Hz-Leaded Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20M1XSN
S4A200NF20M1XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 24AC~60Hz-Leaded Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20R1XSN
S4A200NF20R1XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, 24DC-Leaded Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF20X0XSN
S4A200NF20X0XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 3/4" Connection, FPT Flange Type, No Coil Style AC-No Coil Style Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF25B1XSN
S4A200NF25B1XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 1" Connection, FPT Flange Type, 120AC~60Hz-Leaded Standard Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF25B2XSN
S4A200NF25B2XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 1" Connection, FPT Flange Type, 120AC~60Hz-Leaded Red LED Pilot Light Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
S4A200NF25B3XSN
S4A200NF25B3XSN
PARKER Solenoid Valves- S4A Type, 20mm Port Size (mm), 3/4" Port Size (inch), None Operation Style, Full Capacity Minimum Operating Capacity, Without Strainer Strainer Type, 1" Connection, FPT Flange Type, 120AC~60Hz-Leaded Green LED Pilot Light Coil Type, No Check Valve Check Valve Type, Standard Valve Material Valve Material, No Plating Plating, Gray Iron Body Material, PTFE Seat Material, Flanged Body Type
1 - 12 of 1,230 Part Numbers

Specifications

Type

  • S4A, S4ASC, S4AE, S4W, S4AX, S4AD

Body Type

  • Flanged or Weld In

Check Valve Type

  • No Check Valve, with CK-4, with CK-1

Strainer Type

  • Without Strainer or with Strainer

Model Number

  • Please Configure Part for Model Number

Body Material

  • Gray Iron, Ductile Iron, Cast Steel

Port Size

  • ¾” to 8” / 20 to 200 mm

Flow Coefficient

  • 1.2 Kv to 470 Kv

Coil Type

  • Please Configure Part for Coil Style Specifications

Maximum Operating Temperature

  • 105°C / 220°F

Minimum Operating Temperature

  • -30°C / -25°F

Plating

  • No Plating

Flow Coefficient

  • 1.4 to 550 Cᵥ

Seat Material

  • PTFE or Metal

Minimum Operating Capacity

  • Full Capacity, 17%, 50%, 35%

Maximum Rated Pressure

  • 400 or 406 psig (27.6 or 28 bar)

Valve Material

  • Standard Valve Material or Meets Pressure Equipment Directive (PED)

Connection

  • None or ¾” to 4”

Operation Style

  • None, Slow Closing, External Actuating Pressure Supply, Explosion-proof, Dual Position

Flange Type

  • FPT, ODS, Socket Weld, Weld Neck, No Flange

  • Refrigerant Liquid Lines, Hot Gas Lines, or Suction Lines in a Temperature Range of -45°C to 105°C (-50°F to 220°F)
  • The Dual-Position Feature of the S4AD is Specifically Designed to Help aid Against the Damaging Effects of Liquid Hammer and Sudden Liquid Deceleration
  • This Valve is Typically Applied as a Combination Hot Gas Valve and Soft Gas Valve or as a Liquid Solenoid
  • Hazardous Environment (S4X)
  • Market:
    • Industrial Refrigeration
    • Commercial Refrigeration
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