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Control Valves

Dyna-Flo is our brand for control valves. We take care of sizing, selection, supply, spare parts and service. Dyna-Flo →

Sliding stem and rotary control valves with pneumatic actuators and positioners, sized on Cv for gases, steam and liquids: globe, angle, segmented ball, full-bore and eccentric plug designs, ASME Class 150 to 2500.

Also known as: control valve, globe valve, rotary valve, segmented ball valve, actuator, positioner, Cv.

Models

Connection

FlangedThreadedWeld endWafer

Fits sizeDN

18 of 18 models

Sliding stem8

Dyna-Flo 360 series sliding stem control valve

Standard pressure globe and angle control valve, 1/2" to 8", ASME Class 150 to 600, cage or top guided, shutoff Class II to VI. The general-purpose Dyna-Flo control valve.

Dyna-Flo 390 series high pressure sliding stem control valve

High pressure globe and angle control valve, 1" to 8x6", ASME Class 900 to 1500, cage or top guided, shutoff Class II to V, with reduced port and severe service trim options.

Dyna-Flo 320 series axial flow anti-cavitation control valve

Axial flow anti-cavitation sliding stem valve, 2" to 8", ASME Class 300 to 1500, linear, cage guided, shutoff Class V, for high pressure drop liquid service.

Dyna-Flo 350 series expanded outlet control valve

Expanded outlet, reduced port sliding stem control valve, 8x6" to 12x8", ASME Class 150 to 900, for gas and steam letdown where the outlet velocity must be kept low.

Dyna-Flo 370 series large sliding stem control valve

12" sliding stem control valve with 12", 14" or 16" flanges, ASME Class 150 to 600, cage guided, shutoff Class IV to V, for large flow gas, steam and liquid control.

Dyna-Flo 380 series high pressure large control valve

3", 4x3" and 8" sliding stem control valve for ASME Class 900 to 2500, cage guided, shutoff Class II to VI, for severe high pressure gas and liquid service.

Dyna-Flo DF2000 oilfield control valve

Rugged 1" and 2" sliding stem control valve for oilfield service, ASME Class 150 to 2500, threaded bonnet, NACE construction standard, equal percentage.

Dyna-Flo DF100, DF234, DF270 and DF2410 integral control valves

Compact 1" and 2" sliding stem control valves with integral actuator, ASME Class 150 to 1500, ports 1/4" to 1-1/4", for wellsites, skids and small process lines.

Rotary5

Dyna-Flo 570 series segmented ball control valve

Segmented ball rotary control valve, 1" to 24", ASME Class 150 to 600, flanged or wafer, shutoff Class II to VI, high capacity with wide rangeability.

Dyna-Flo 570S slurry control valve

Erosion resistant segmented ball control valve for slurries, 3" to 8", ASME Class 150 or 300, with high chrome iron and ceramic trim and reverse flow characteristic.

Dyna-Flo 580 series full-bore rotary control valve

Full-bore ball control valve, 6" to 24", ASME Class 150 to 600, shutoff Class IV or VI, single or dual seal, for high capacity control with tight shutoff.

Dyna-Flo 590 series large-bore high pressure rotary control valve

Wafer full-ball control valve for ASME Class 600 and 900, 4" to 16", shutoff Class II or VI with full ANSI shutoff option, for high pressure gas and liquid control.

Dyna-Flo DF400 eccentric rotary plug control valve

High capacity eccentric rotary plug control valve, 1" to 6", ASME Class 150 and 600, linear, shutoff Class IV or VI, flanged or wafer, with severe service coatings.

Actuators2

Dyna-Flo DFC, DFO, DFN and DFR spring and diaphragm actuators

Pneumatic spring and diaphragm actuators for sliding stem (DFC, DFO, DFN) and rotary (DFR) control valves, fail-open or fail-closed, travel to 4", for −40 °C to +82 °C.

Dyna-Flo DFLP and DFRP piston actuators

Pneumatic piston actuators for large sliding stem (DFLP) and rotary (DFRP) control valves, 20 to 110 psig supply, travel to 8-1/8", for high thrust and long stroke.

Instruments3

Digital valve positioner (Siemens PS2) for Dyna-Flo valves

HART-ready digital valve positioner fitted to Dyna-Flo sliding stem and rotary actuators, 0 to 100 psig output, zero bleed in steady state.

Dyna-Flo PRO-50 pressure regulator

Instrument supply pressure regulator, outlet 0 to 125 psig, inlet to 250 psi, −93 °C to +399 °C, for supply air and gas to actuators and positioners.

Dyna-Flo 4000 pressure controller and 5000 level controller

Local pneumatic pressure controller (4000 series, 30 to 5000 psig) and displacer type pneumatic liquid level controller (5000, ASME Class 1500) for self-contained control loops.

Not seeing the size, connection or rating you need? Most of these models are built to order and our suppliers' engineers adapt them. Send us what you have and we work it out. Send us your requirement →