DF234 Integral Valve & Actuator
DF234 Front View
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DF234 Integral Valve & Actuator

Compact dump valve for tough fluid applications that require easy serviceability.

  • 1 to 2 inch NPS (25 to 50mm DN) Valve
  • 1/4 to 1 inch (6.4 to 25.4mm) Port
  • Globe and Angle Body Styles
  • RF |  RTJ  |  FNPT Available End Connections
  • ASME B16.34 Class 150 to 1500 Pressure Rating
  • ANSI/FCI 70.2 Class IV Shutoff
More Details

DF234 integral control valves are primarily designed for on/off control of fluids or gasses and may also be adapted for throttle control. These tough, compact valves feature a low-profile, lightweight design that fits into tight locations and makes for easy handling. The DF234 is well suited for high pressure fluid or gas applications up to 2,250 PSIG (155 Bar).

Overview

DF234 Integral Valve & Actuator

  • Standard live-loaded packing

  • Hammer nut bonnets

  • Field-reversible actuator

  • NACE construction standard

Product Specifications

DF234 Available ConfigurationsOpen arrow
AVAILABLE CONFIGURATIONS
BODY SIZE END CONNECTION
FNPT RF (FLANGED CONNECTION) RTJ (FLANGED CONNECTION)
ASME CLASS 150 ASME CLASS 300 ASME CLASS 600 ASME CLASS 900 ASME CLASS 900/1500 ASME CLASS 600 ASME CLASS 900 ASME CLASS 900/1500
GLOBE 1" NPS (25mm DN) ü ü ü ü ü û ü ü û
2" NPS (50mm DN) ü ü ü ü û ü ü û ü
  NOTES: FNPT = 2,250 PSI (155 BAR) COLD WORKING PRESSURE.
DF234 Available Shutoff Pressure DropsOpen arrow
AVAILABLE SHUTOFF PRESSURE DROPS
ACTUATOR ACTION FLOW DIRECTION (PRESSURE TENDS TO) PORT DIAMETER NUMBER OF ACTUATOR SPRINGS
0-20 PSIG (0-1.38 BARG) OPERATING PRESSURE 0-35 PSIG (0-2.41 BARG) OPERATING PRESSURE
3 6 3 6
FAIL CLOSED FLOW UP (OPENS VALVE) 1/4" (6.4mm) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
3/8" (9.5mm) 1,672 PSI (116 BAR) 2,250 PSI (155 BAR) 1,672 PSI (115 BAR) 2,250 PSI (155 BAR)
1/2" (12.7mm) 770 PSI (53.1 BAR) 1,867 PSI (129 BAR) 770 PSI (53.1 BAR) 1,867 PSI (129 BAR)
3/4" (19.1mm) valve will not shut off 684 PSI (47.2 BAR) valve will not shut off 684 PSI (47.2 BAR)
1" (25.4mm) valve will not shut off 290 PSI (20.0 BAR) valve will not shut off 290 PSI (20.0 BAR)
FLOW DOWN (CLOSES VALVE) 1/4" (6.4mm) 1,469 PSI (101 BAR) 2,250 PSI (155 BAR) 1,469 PSI (101 BAR) 2,250 PSI (155 BAR)
3/8" (9.5mm) 2,139 PSI (147 BAR) 2,250 PSI (155 BAR) 2,139 PSI (148 BAR) 2,250 PSI (155 BAR)
1/2" (12.7mm) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
3/4" (19.1mm) 1,710 PSI (118 BAR) 942 PSI (65.0 BAR) 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
1" (25.4mm) 784 PSI (54.1 BAR) 392 PSI (27.0 BAR) 1,512 PSI (104 BAR) 1,064 PSI (73.4 BAR)
FAIL OPEN FLOW UP (OPENS VALVE) 1/4" (6.4mm) 2,250 PSI (155 BAR) valve will not shut off 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
3/8" (9.5mm) 2,250 PSI (155 BAR) valve will not shut off 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
1/2" (12.7mm) 1,193 PSI (82.3 BAR) valve will not shut off 2,250 PSI (155 BAR) 2,035 PSI (140 BAR)
3/4" (19.1mm) 385 PSI (26.5 BAR) valve will not shut off 1,507 PSI (104 BAR) 759 PSI (52.3 BAR)
1" (25.4mm) 177 PSI (12.2 BAR) valve will not shut off 807 PSI (55.6 BAR) 345 PSI (23.8 BAR)
FLOW DOWN (CLOSES VALVE) 1/4" (6.4mm) 2,244 PSI (155 BAR) valve will not shut off 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
3/8" (9.5mm) 2,250 PSI (155 BAR) valve will not shut off 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
1/2" (12.7mm) 2,250 PSI (155 BAR) valve will not shut off 2,250 PSI (155 BAR) 2,250 PSI (155 BAR)
3/4" (19.1mm) 897 PSI (61.9 BAR) valve will not shut off 897 PSI (61.9 BAR) 1,646 PSI (113 BAR)
1" (25.4mm) 672 PSI (46.3 BAR) valve will not shut off 672 PSI (46.3 BAR) 1,288 PSI (88.8 BAR)
DF234 Available Flow CharacteristicsOpen arrow
CHARACTERISTIC PREFERRED FLOW DIRECTION
QUICK OPENING REFER TO SHUT OFF PRESSURE DROPS

DF234 Control Valve Documentation

DF234 Instruction Manual
Dynaflo, DynaFlo, Integral Valve & Actuator, Manuals & Software
DF234 Sales Bulletin
Brochures, Dynaflo, DynaFlo, Integral Valve & Actuator
Refer to our FloSpec software for product selection, sizing and ordering

Refer to our FloSpec software for product selection, sizing and ordering

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