Body, seat, liner and backup follow the medium — not a single green cell. Concentration and temperature stay in the rating. This page does not name a steel grade until those are in.
Sits next to the valve sizing calculator and the pump duty calculator. The matrix below is the same fluid, every role — click a row to load it into the worksheet.
Role matrix
The table is the scan. The worksheet below is the spec. Click a row to load it into the worksheet. Click a cell for the note. Partner linings are italic.
++ suitable · + with caution · O talk to us · − not suitable · U unknown
Ratings assume continuous exposure at the stated concentration and temperature, usually ~20–25 °C unless the cell says otherwise. Steam is not hot water. Fire destroys a soft seat (API 607). This page does not name a steel grade. Confirm with the OEM. Not a substitute for a corrosion coupon or a manufacturer letter.
Worksheet
Same grammar as the valve calculator. The specification beneath is composed from these choices, not typed afterwards.
Line medium
Wetted path
Nine-field enquiry — composed from the fluid
The same sheet the calculators already write. Medium, seat and materials are filled; the rest stays a question.
FAQ
No. Steam temperature rules out a soft seat. Isolation on saturated steam is a metal-seated gate or a triple-offset butterfly. A PTFE seat specified on steam fails on temperature and then gets blamed as quality. Confirm fire-safe (API 607) if the line requires it.
Do not generalise a 316 bleach valve. 316 looks fine on a generic chart and then pits — chloride pitting and hypochlorite SCC of austenitics. Typical path is a PFA-lined ball (partner-flagged) or a PTFE-diaphragm dosing pump. Confirm with the OEM for the actual concentration and temperature.
No. Body and trim follow the medium and temperature. The chart rates wetted roles (body, liner, seat, elastomer) and composes a nine-field enquiry. Confirm with the OEM. It is not a substitute for a corrosion coupon or a manufacturer letter.