CLARK SOLUTIONS
Two-Way & Three-Way Electronic Globe Valves
1/2" to 6", Two-State, Tri-State, Modulating

DESCRIPTION
Clark Globe Valves 1/2"through 2"are bronze body, NPT screw type, and are rated for ANSI Class 250 working pressure.  The operating temperature range (of the controlled medium) limits are 20° to 250°F. Valve stems are stainless steel and valve plugs are brass for water service and brass or stainless steel for steam service, depending on temperature and pressure requirements. Stem packing is EPDM O-ring or Teflon/EPDM, depending on temperature. 1/2" through 2"two-way valves are rated for 25 PSI differential for water applications and 15 PSI inlet for steam applications.  1/2"through 2" three-way valves are rated for 25 PSI differential.  Optional trim materials are available for higher temperature/pressure applications. Flow type for two-way valves is equal percentage or modified equal percentage for water or steam applications. Flow type for three-way valves is linear and all screwed valves meet ANSI class IV leakage standards (not to exceed 0.01%of Cv).

Globe Valves 2-1/2"through 6" are cast iron body, flanged, and rated for ANSI Class 125 working pressure. The operating temperature range (of the controlled medium) is 20° to 250°F for water and/or low pressure steam applications (up to 15 PSI inlet pressure) with normal duty packing and up to 337°F maximum temperature with optional Teflon/EPDM V-ring packing for higher pressure steam and hot water. Valve stems are stainless steel and valve plugs are brass or stainless steel. Stem packing is EPDM O-rings or optional Teflon/V-ring/EPDM O-ring. Two-way standard valves are rated for 25 PSI differential pressure for water applications and 15 PSI differential pressure for steam applications (50 PSI differential with optional stem packing and stainless steel trim). Three-way valves are rated for 25 PSI differential (optional trim for 50 PSI differential). Flow type for two-way valves are equal percentage or modified equal percentage for water applications. Flow type for three-way valves are modified equal percentage or linear. All flanged valves meet ANSI Class IV leakage standards (not to exceed 0.01%of Cv).

Available actuators are modulating, floating (tri-state), or two-position type with or without spring return as required for the application. Each valve actuator has current limiting or stall detection circuitry incorporated into its design to prevent damage to the actuator. A gear release or manual override crank is provided on the motor to allow for manual override. The actuators are powered by a 24 VAC,120 VAC or 24 VDC power source. Actuators are UL listed.

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Table A
Valve Groups
Through 2"
2 1/2" to 6"
Specifications
1/2 to 2”, Two and Three-way
Flanged 2 1/2 to 6”, Two and Three-way
Flow Characteristics
Two-way: Equal Percentage, Three-way: Linear
Two-Way: Equal Percentage, Three-Way: Mod. Equal Percentage or Linear
Valve Body Rating
ANSI Class 250, ANSI Leakage Class IV
ANSI Class 125, ANSI Leakage Class IV (ANSI 250 available)
Max. Recommended Inlet Pressure
Two-Way: Water 365 PSI@250oF, Steam 15 PSI Three-Way: Mixing 365 PSI@250oF, Diverting 335 PSI@300oF
Two-Way: Water 150 PSI @ 250°F, Steam: 15 PSI, 100 PSI for " -ST" only Three-Way: Mixing 150 PSI @ 250°F, Diverting (2-1/2" to 5") 140 PSI @ 300°F (6" to 8") 140 PSI @ 150°F
Max. Recommended Diff. Pressure
Two-Way: Water 25 PSI, Steam: 15 PSI, 50 PSI for  "-ST" only Three-Way: Mixing 25 PSI, Diverting 50 PSI
Two-Way: Water 25 PSI, Steam: 15 PSI, 50 PSI for "-ST" only Three-Way: Mixing 25 PSI, Diverting 50 PSI
Maximum Close-off Pressure
See Tables B & C
Operating Temperature Range
Two and Three-Way Mixing: 20°F to 250°F (-7°C to 121°C) Three-Way Diverting: 32°F to 300°F (0°C to 149°C)
Two and Three-Way Mixing: 20°F to 250°F (-7°C to 121°C) Three-Way Diverting: (2-1/2" to 5") 32°F to 300°F (0°C to 149°C),  (6" to 8")32°F to 150°F (0°C to 66°C)
Materials
Standard
"-SS"
"-ST"
Standard
"-SS"
"-ST"
Body
Bronze
Bronze
Bronze
Cast Iron
Cast Iron
Cast Iron
Stem
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Stainless Steel
Packing (Two and Three-Way) Mixing)
EPDM O-Ring
EPDM O-Ring
Teflon / EPDM V-Ring
EPDM O-Ring
EPDM O-Ring
Teflon / EPDM V-Ring
Packing (Three-Way Diverting)
TFE V-Ring
-
-
TFE V-Ring
-
-
Trim
Bronze
Stainless Steel
Stainless Steel
Bronze
Stainless Steel
Stainless Steel
Seat
Single, metal to metal
Connections
Female NPT
Flanged Ends

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Table B 1/2" to 2" Globe Valve Actuator Model Number Selection Chart Threaded Ports
Size (NPT) Two-Way Three-Way Actuator Model Number/Minimum Close-Off Pressure (PSI)
Cv Valve Model Cv Valve Model EN44-NP EN44 EN88 EN62 ES75 EN132 ES142
1/2" 1.0 GS2A-1.0 1.0 GS3A-1.0 143 143 >250 201 244 >250 >250
1/2" 1.6 GS2A-1.6 1.6 GS3A-1.6 143 143 >250 201 244 >250 >250
1/2" 2.5 GS2A-2.5 2.5 GS3A-2.5 143 143 >250 201 244 >250 >250
1/2" 4.0 GS2A-4.0 4.0 GS3A-4.0 143 143 >250 201 244 >250 >250
3/4" 6.3 GS2A-6.3 6.3 GS3A-6.3 83 83 167 117 142 250 >250
1" 10 GS2A-10 10 GS3A-10 59 59 118 83 100 177 190
1 1/4" 16 GS2A-16 16 GS3A-16 39 39 78 55 67 117 127
1 1/2" 25 GS2A-25 25 GS3A-25 27 27 53 38 45 79 86
2" 40 GS2A-40 40 GS3A-40 - - 33 23 28 49 54

Table C 2 1/2" to 6" Globe Valve Actuator Model Number Selection Chart Flange Connections
Size (NPT) Two-Way Three-Way Mixing Three-Way Diverting Actuator Model Number/Minimum Close-Off Pressure (PSI)
Cv Valve Model Cv Valve Model Cv Valve Model ES142 EN177 EN310 Dual ES142 Dual EN310
2 1/2" 63 GF2A-63 63 GF3A-63 68 GFD3A-68 41 51 89 81 178
3" 100 GF2A-100 100 GF3A-100 85 GFD3A-85 26 33 58 52 115
4" 160 GF2A-160 160 GF3A-160 160 GFD3A-160 10 12 21 19 42
5" 250 GF2A-250 250 GF3A-250 195 GFD3A-195 - - 14 12 27
6" 400 GF2A-400 400 GF3A-400 270 GFD3A-270 - - 9 9 19

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Table D  
Two-Way Valve, 1/2" through 2"
Size Model Dimensions (inches)
A B C D
1/2" GS2A-Cv 2.75 1.38 1.13 2.94
3/4" GS2A-6.3 3.25 1.63 1.00 3.94
1" GS2A-10 3.75 1.88 1.50 3.75
1 1/4" GS2A-16 5.00 2.50 1.63 4.13
1 1/2" GS2A-25 5.06 2.53 2.00 4.28
2" GS2A-40 6.13 3.06 2.44 4.56
Three-Way Valve (Mixing)
1/2" GS3A-Cv 2.88 1.44 2.13 4.31
3/4" GS3A-6.3 3.25 1.63 2.19 4.31
1" GS3A-10 3.88 1.94 2.38 4.50
1 1/4" GS3A-16 4.88 2.44 2.36 4.63
1 1/2" GS3A-25 5.19 2.59 2.88 4.63
2" GS3A-40 6.25 3.13 3.31 4.75

Actuator Dimensions
Actuator  Dimensions (inches)
Linkage Type* E F G
Spring Return
ES62 Low 11.3 11.5 3.5
ES75 Low 11.3 11.5 3.5
ES142 Low 11.3 11.5 3.5
Non-Spring Return
EN44/88 Zone 9.5 7.5 3.5
EN132 Low 11.3 11.5 3.5
EN177 Low 11.3 11.5 3.5
EN310 Med 13.5 11.5 3.5
*The linkage is constructed of high strength extruded aluminum alloy, torque tested to over 1200 in-lbs. Dual units are rated for continuous use at 800 in-lbs. The linkage connects valve and actuator and converts the rotary action of the actuator to linear motion. "Zone" covers torque requirements to 90 in-lb, "Low" to 200 in-lb and "Med" to 800 in-lb. Extra long (XL) legs are available for high temperature applications and shorter legs for applications where space is limited. Call for application assistance.

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ORDERING INSTRUCTIONS
1) REVIEW OUR MOTOR ACTUATED CONTROL VALVE APPLICATION GUIDE
2) SPECIFY ACTUATOR MODEL NUMBER (FIRST SELECT BASE ACTUATOR FROM TABLES B & C , THEN SEE SPECIFIC ACTUATOR SPECIFICATION SHEETS TO DETERMINE COMPLETE MODEL NUMBER)
Non-Spring Return Actuators

EN44 & EN88
EN132, EN177 & EN310
Spring Return Actuators

ES62, ES75 & ES142

3) SPECIFY VALVE MODEL NUMBER (SEE TABLES BELOW)
ABC EXAMPLE: EN88C2 (ACTUATOR) - GS2A-16-WP (VALVE)


PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS
A=Valve Base Model No. B C
Optional Materials See Table A Other Options
See Tables B & C - = Standard WP=NEMA 4/4x Actuator Enclosure
Standard Materials are: SS = "SS" materials WS=Weather Shield
Body: Cast Iron ST = "ST" materials  
Trim: Bronze  
Stem: Stainless Steel
Packing: EPDM
Seat: Single, Metal to Metal

For assistance call 978-568-3400

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