SVF Flow Controls

A general-purpose ball valve in stainless and carbon steel with a blowout-proof stem and seal-welded body, a vinyl grip handle and a standard locking handle.

Use it whenUse it for utility-grade isolation across a plant -- SVF points it at water and wastewater service. The locking handle is the reason to pick it where a valve must be secured open or closed.

A flanged standard-port ball valve from 1-1/2 inch to 6 inch, ANSI Class 150, with TFM1600 seats standard and optional SupraLon seats for higher temperature, steam and thermal fluid service. SVF states it is certified to API-607 fire safe.

Use it whenUse it when the spec calls for a flanged fire-safe ball valve on chemical or oil and gas service. Specify the SupraLon seat option instead of standard TFM if the line carries steam or hot thermal fluid -- that seat choice is the decision that matters on this valve.

A ball valve series in the SVF industrial range.

Use it whenUse it where SVF's sizing chart puts it for your line size and class -- confirm the body style and port against the datasheet before quoting, since the series page did not render for me.

A bronze-body ball valve series.

Use it whenUse it where a bronze body is specified or acceptable -- typically water and general utility service -- and stainless would be more valve than the line needs.

Ball valves configured for compressed natural gas service.

Use it whenUse it on CNG fueling and gas handling systems. This is a service-specific product, not something to substitute a general-purpose valve into.

Quarter-turn butterfly valves in the SVF range.

Use it whenUse it on larger lines where a ball valve becomes heavy and expensive and full-port flow is not required.

Conventional linear and non-return valves.

Use it whenUse gate for straight-through isolation, globe for throttling on smaller lines, and check or swing check to prevent reverse flow at pump discharges and header tie-ins.

An inline strainer that catches debris ahead of sensitive equipment.

Use it whenUse it upstream of control valves, meters, pumps and anything a piece of weld slag would damage. Cheap insurance during commissioning especially.

Air-powered quarter-turn actuators for SVF valves.

Use it whenUse it when plant air is available. Fast, high-cycle, and the natural choice for on-off automated isolation.

Spring-and-diaphragm actuators.

Use it whenUse it for spring-return duty and for modulating service where a diaphragm's smoother, more linear response beats a piston.

Motor-driven actuators for SVF valves.

Use it whenUse it when there is no air at the valve, when the valve is remote from the air header, or when you want positioning without an air supply. Note the default failure behavior is hold-in-place, so if the process needs a defined fail position, go to the spring return version.

Electric actuators with a mechanical spring return.

Use it whenUse it when you need electric power but the valve must drive to a known safe position on power loss. This is the combination people forget exists and then design around unnecessarily.

Devices that drive an actuator to a commanded intermediate position.

Use it whenUse it whenever the valve modulates rather than just strokes open and closed.

Position feedback devices, including a low-profile version and a combined switch-plus-solenoid package.

Use it whenUse a switch box any time the control system needs confirmed position. Choose the low-profile version in tight installations, and the integrated switch and solenoid when you want fewer parts and less tubing on the actuator.

Electrically operated air switching for pneumatic actuators.

Use it whenUse it on every remotely commanded pneumatic valve. Match voltage and area classification.

A controller for the ASi (Actuator Sensor Interface) network.

Use it whenUse it when you are running many automated valves on a bus rather than home-running discrete wiring to each one -- it cuts installation labor significantly on large skids and plants.

Air preparation for pneumatic actuators.

Use it whenUse it on every air-actuated valve. Wet or dirty air is the leading cause of actuator and solenoid failure.

A gear override that lets an operator move an automated valve by hand and then disengage.

Use it whenUse it when a valve absolutely has to be movable during a power or air outage -- a common requirement on isolation valves that operators must be able to close manually.

Handwheel gear operators for manual valves.

Use it whenUse it when the valve is too large or the torque too high to turn with a lever.

Extensions that move the operator away from the valve body.

Use it whenUse it on insulated, buried or otherwise out-of-reach valves.

Thermally activated plugs that vent actuator air in a fire.

Use it whenUse it when a fire should drive the valve to its fail-safe position -- fire-safe isolation on hydrocarbon and flammable service. Frequently a code or insurer requirement rather than an option.