ITT

The weir-pattern Dia-Flo, in which the diaphragm closes onto a raised weir; available for clear fluids and slurries.

Use it whenuse it when the service is corrosive and needs throttling as well as isolation -- the weir gives better control characteristics and longer diaphragm life than a straightway. It is the default Dia-Flo unless the line has to drain or pass solids freely.

The straight-bore Dia-Flo, with no weir in the flow path.

Use it whenuse it when the line must drain completely or carry heavy solids and a weir would trap them -- you give up some throttling behaviour and diaphragm life to get an unobstructed bore.

A Dia-Flo variant with a direct loaded bonnet arrangement.

Use it whenuse it when diaphragm sealing load is the recurring maintenance issue -- worth asking ITT which bonnet arrangement suits the duty rather than assuming the standard.

A Dia-Flo with an extended stem.

Use it whenuse it when the valve is buried in insulation, sits in a jacketed line, or runs at a temperature that would cook the handwheel and packing area.

A manually operated Dia-Flo with chainwheel actuation.

Use it whenuse it when the valve is out of reach overhead and there is no case for automating it -- cheaper and far less to maintain than an actuator you only stroke occasionally.

Pneumatic actuators, solenoid valves, positioners, limit switches, transducers and speed control valves offered with the Dia-Flo range.

Use it whenuse it when the diaphragm valve has to be automated -- take the actuator and positioner from ITT rather than mounting a generic actuator, because diaphragm valve thrust and travel do not behave like a quarter-turn valve's torque.

Two grades of the same slurry valve concept -- PTA for heavy duty service, PTD for light to medium duty.

Use it whenuse it when the line is slurry and you are deciding how much valve to buy. Match the grade to the actual duty: PTD on a light or intermittent line is the cost-effective call, and PTA is what you specify where the slurry is punishing and downtime is expensive.

Heavy duty knife gate valves, with the HD150/300 covering higher-pressure duty.

Use it whenuse it when the service is abrasive and the pressure is beyond a light-duty knife gate. Knife gate is the right family whenever the line carries solids that would jam a wedge gate or cut a ball seat.

A knife gate valve that seals with flow in either direction.

Use it whenuse it when the line can flow either way, or when the valve may sit with pressure on the downstream side -- a unidirectional knife gate will leak in that condition, and this is a common field surprise.

Knife gate valves with urethane linings.

Use it whenuse it when abrasion, not corrosion, is what is killing the valve -- urethane outlasts metal against particle wear. Check the temperature limit of the liner before specifying it.

A ductile iron general duty knife gate at one end of the range and a high performance knife gate at the other.

Use it whenuse it when you need to place the job on the price and performance curve -- the ductile iron valve is the economical choice on general duty, the high performance version is for when general duty is not what you have.

Purpose-built knife gate variants: multi-port distribution, recycle and reject duty, transmitter isolation, a bonneted design and a drilling fluid valve.

Use it whenuse it when the application has a name -- these exist because a general knife gate did not work in that spot. If a customer describes a recycle or reject line, a transmitter tap on slurry, or drilling fluid, ask for the specific model rather than sizing a standard valve.

ITT's ball valve line for corrosive service; the extended bonnet variant is called out separately on ITT's site.

Use it whenuse it when the service is corrosive and you specifically want a ball valve's full bore and quarter-turn operation instead of a diaphragm valve. Specify the extended bonnet where the valve is insulated or hot, for the same reason as an extended-stem diaphragm valve.

A second ball valve line listed on ITT's site alongside Cam-Tite.

Use it whenuse it when Cam-Tite is not the right fit -- but get ITT to state the difference before quoting, because the two overlap and the site does not draw a clear line between them.

ITT's hygienic diaphragm valve line for biopharmaceutical and similar sterile applications; the site notes an ISP model.

Use it whenuse it when the process is sterile or high purity and the valve has to drain and clean in place. This is the same valve concept as Dia-Flo but built for cleanability rather than corrosion resistance -- do not cross-quote one for the other.

A hygienic diaphragm valve platform built around a mount-and-turn design. ITT states the design cuts diaphragm changes from an industry average of 23 minutes to 3 minutes, a 90 percent reduction in maintenance time, and that an integrated thermal compensation system keeps a constant sealing force through thermal cycling.

Use it whenuse it when a plant is losing production time to diaphragm changes, or when repeated SIP and CIP thermal cycling is causing seal problems that no amount of retorquing fixes. The argument for EnviZion is total cost of ownership and uptime, not the purchase price of the valve -- pitch it that way or it looks expensive.

ITT's burner shutoff valve brand, listed on its site as one of the four things Engineered Valves makes.

Use it whenuse it when a combustion system needs a fuel shutoff valve as a named, purpose-built item. Treat it as a safety device, not a process valve -- confirm the approvals the site or insurer requires before proposing anything.

Engineered valve solutions ITT builds to a specific requirement rather than from the catalog.

Use it whenuse it when a slurry, gate or diaphragm application genuinely has no catalog answer -- an odd face-to-face, a non-standard port arrangement, an unusual liner. This is a real path with ITT and worth raising rather than forcing a standard valve into a bad fit.