Linear Control Valves, Quarter turn Control Valves with Hydraulic, Pneumatic or Electric Actuation
Control valves are used to control fluid flow such as gas, water, steam or chemicals. They do this by varying the size of the flow passage as directed by a signal from a controller. This enables the direct control of flow rate and the consequential control of process quantities such as temperature, pressure, or liquid levels. Traditional control valves are a globe or linear type operation with an actuator and positioner. Some globe valve designs can be 3 way or diverter or mixing type valves.
Control Valve Actuators are robust in design suitable for modulating service commonly Pneumatically operated followed by electric and hydraulic. Other types of control valves can be sliding gate, hydraulic, diaphragm, butterfly, plug and ball valves. Each has its own niche application and sometimes site preference. Size ranges are 15nb to 900nb and pressure ranges from 200psi to 6000psi. Valve body materials can be bronze, iron, steel, stainless as well as lined body valves and exotic alloys such as titanium. For some hazardous service (toxic or lethal) applications refer the globe valve section relating to Euro Chlor approvals.
Well head and compressor station valves operate at high pressure and velocities. We offer metal seated ball valves with various internal seating trims to suit a specific application generally pneumatically actuated. Valve and Flow Control Specialists also support this range along with wear trims to suit.
SOFT SEAT AND METAL SEATED BALL VALVES with standard ports and V ports can easily be changed into control valves with the addition of actuation. Most ball valves these days either have an ISO mounting pad as part of the body or can have a bracket bolted it to accept either pneumatic or electric actuation. Some of these valves will be in the Ball Valve section as well as outlined below.
Dela Control Valves
These control valves come in a few variations as they offer both linear and quarter turn operation. The AMCB is a quarter turn metal seated eccentric C ball type control valve. The rangeability on this type of valve is 150:1 compared to a linear globe type which is around 50:1. With hardened trims they give an economical option to arduous slurry services without the expense of going to a choke valve. Severe services may require the choke valve control valve design and we offer those under the CHOKE valve section. AMCV standard linear valve is the daily workhorse range control valve in class 150 class 300 and class 600 from stock in Australia, DN 25 to DN300. The variance being the various trims and coatings. The AMCVSS is the severe service version from DN25 to DN300 ANSI 150 to ANSI 2500. Contact us for relevant data on these valves
SOMAS
The segmented ball type quarter turn valve typically used in the pulp and paper industry and waterworks is covered by the SOMAS range from Sweden. Somas has long been associated with both industries globally and of exceptional quality. These valves are PN20 and PN25 rated and come as standard in CF8M Stainless steel bodies from DN80 through to DN500 sizes. They are available in wafer KVTW and flanged bodies KTVF.
Somas also produce the SKV range of CF8M 1 piece control ball valves DN25 to DN50 PN50 rated and a 2 piece body DN80 to DN400 PN25 rated.
Butterfly valves (not in this section) MTV wafer or lugged and MTVF flanged in CF8M bodies DN80 to DN500 PN25 with various seat options. These triple eccentric butterfly valves also have the VSS and VSSS versions for class 5 metal shut off and temps up to 550 Deg C. Sizes DN80 to DN 500.
