Ball Valves · Floating Ball Valves
SS316L Three-Piece Floating Ball Valves
The three-piece 304/316L stainless floating-ball execution at the sanitary end of the ball-valve family: 1.4401/304 or 1.4404/316L body, FDA-listed PTFE seal, 0.5 to 2.5 inch sizes, -20 to 150 degree centigrade temperature window, and clamped, welded or threaded end connections to 3A/BPE/DIN/ISO/IDF standards. The floating-ball principle seats the ball downstream under line pressure, giving bubble-tight shut-off with simple construction at these small bores.
Part of the Floating Ball Valves family
Last updated: 2026-11
Specifications
| size range | 0.5"-2.5'' |
|---|---|
| body materials | 1.4401/304, 1.4404/316L |
| end connections | Clamped, Welded, Threaded |
| temperature range | -20~150 degree centigrade (up to diaphragm gasket) |
| valve design | Three-Piece |
| seal material | PTFE(FDA 21CFR 177.2600) |
| casting body options | 1.4404/316L, 1.4401/304 |
| standards | 3A, BPE, DIN, ISO, IDF |
| applications | Dairy, food, beverage, pharmacy, cosmetic |
| max pressure by seal | Standrad→ NC: EPDM (6BAR), PTFE (4.5BAR) |
| forging body options | 1.4404/316L, ASME BPE/1.4435 Nb2 Fe <0.5% |
| optional operation | By pneumatic actuator, electric actuator, control unit, positioner etc. |
| certification | CE, ISO, FDA |
Application & selection guidance
Select this execution for dairy, food, beverage, pharmaceutical and cosmetic lines where the medium contacts the wetted parts and drainability or cleanability governs: the three-piece body lets the internals be swung out for inspection and the FDA-listed PTFE seat matches hygienic duty. Pick 1.4404/316L where chlorides or repeated CIP cycles demand the low-carbon grade; clamp ends for strip-down frequency, welded ends for permanent lines, threaded ends for instrument taps. Above 2.5 inch or outside the temperature window, move to the industrial floating or trunnion executions in this family.
Frequently asked questions
What is the difference between the 1.4401/304 and 1.4404/316L options?
Both are austenitic stainless listed for the body: 1.4401/304 is the general hygienic grade, while 1.4404/316L adds molybdenum and lowers carbon for better chloride and CIP-chemical resistance. The benchmark page lists both as body options, with 1.4404/316L also offered as the casting grade and an ASME BPE 1.4435 variant for forged bodies.
Which end connection should I choose?
The execution is offered clamped, welded or threaded. Clamped ends suit lines opened frequently for cleaning, welded ends suit permanent hygienic lines where joints must be smooth and crevice-free, and threaded ends suit small instrument and sampling taps.
What temperature and pressure does the PTFE seal allow?
The seal is PTFE to FDA 21CFR 177.2600, and the temperature window is -20 to 150 degree centigrade (up to the diaphragm gasket limit). Pressure depends on actuation and seal configuration as listed on the benchmark page.
Ordering & documentation
Documents
Ask for the documentation set you need with the inquiry — typical items for this execution (material certificates, test reports to the listed inspection standard, dimensional drawings) are confirmed and supplied with the quotation.
Quotation
A quotation-ready inquiry states: nominal size and pressure rating, body and seat material preference, end connection, operation, and the service medium with temperature. Typical values on this page are benchmark reference ranges; the binding values are confirmed at quotation.
Sample & supply
Supply terms, order quantities and lead time are agreed per order — state the destination country and required schedule with the inquiry.
Storage & shipping
Store valves with seats and seals protected from UV, ozone and deformation, keep end-face protectors on until installation, and for elastomer- or PTFE-seated executions avoid prolonged outdoor storage — seat compounds age fastest in direct sunlight and freezing conditions.
Knowledge: selection guides
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