{"id":3830,"date":"2025-10-17T09:01:45","date_gmt":"2025-10-17T01:01:45","guid":{"rendered":"https:\/\/ballvalves.tw\/?post_type=product&p=3830"},"modified":"2026-09-10T13:49:04","modified_gmt":"2026-09-10T05:49:04","slug":"%d8%b5%d9%85%d8%a7%d9%85-%d9%83%d8%b1%d9%88%d9%8a-%d9%87%d9%88%d8%a7%d8%a6%d9%8a-%d9%85%d9%86-%d9%82%d8%b7%d8%b9%d8%a9-%d9%88%d8%a7%d8%ad%d8%af%d8%a9","status":"publish","type":"product","link":"https:\/\/ballvalves.tw\/ar\/product\/one-piece-pneumatic-ball-valve\/","title":{"rendered":"Air Actuated Ball Valve \u2013 One-Piece 3\/8\u2033, Integral ISO 5211 Direct Mount Pad, No Bracket (1PC-PN)"},"content":{"rendered":"

\u0648\u0635\u0641 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

\u0623\u0646 air actuated ball valve<\/strong> supplied as one assembly: a one-piece 3\/8\u2033 stainless steel valve body with a rack-and-pinion air actuator bolted straight onto it. Body in 316 or 304, both made to order.<\/p>\n

There is no bracket and no coupling.<\/strong> The ISO 5211 mounting pad is part of the valve body itself \u2014 cast as one piece with it, not bolted on afterwards. That single fact is why this valve outlasts most small automated ball valves, and it is worth two minutes of your time to understand why.<\/p>\n

Why No Bracket Matters<\/h2>\n

Most small pneumatic ball valves on the market are four separate parts stacked on top of each other: the valve, a steel bracket, a coupling, and the actuator. Every one of those joints is a place where things go wrong.<\/p>\n

\n\n\n\n\n\n\n\n\n
Valve + bracket + coupling + actuator<\/th>\n\u0647\u0630\u0627 \u0627\u0644\u0635\u0645\u0627\u0645<\/th>\n<\/tr>\n<\/thead>\n
The bracket bolts work loose.<\/strong> Every cycle puts torque through them. Nobody checks them until the valve stops turning.<\/td>\nNo bracket to loosen.<\/strong> The pad is part of the body.<\/td>\n<\/tr>\n
The coupling can sit off-centre.<\/strong> A misaligned coupling wears the stem and the actuator shaft on every stroke.<\/td>\nNothing to misalign.<\/strong> The actuator seats directly on the integral pad, concentric with the stem.<\/td>\n<\/tr>\n
Four parts to source, four to stock, four to blame when it fails<\/td>\nValve and actuator, assembled and tested by us before it ships<\/td>\n<\/tr>\n
Taller assembly \u2014 harder to fit in a machine frame<\/td>\nShorter. The actuator sits down on the body.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

\u2190 \u0645\u0631\u0631 \u0625\u0635\u0628\u0639\u0643 \u0639\u0644\u0649 \u0627\u0644\u062c\u062f\u0648\u0644 \u0644\u0639\u0631\u0636 \u062c\u0645\u064a\u0639 \u0627\u0644\u0623\u0639\u0645\u062f\u0629 \u2192<\/p>\n

The pad is ISO 5211 standard<\/strong>, so it is not a proprietary fitting \u2014 you are not locked into us for the actuator. Prefer to fit your own? The valve is also available on its own, pad included, without the actuator.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u0627\u0644\u0639\u0646\u0635\u0631<\/th>\n\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a<\/th>\n<\/tr>\n<\/thead>\n
\u0646\u0648\u0639 \u0627\u0644\u0635\u0645\u0627\u0645<\/td>\nOne-piece ball valve with integral ISO 5211 mounting pad<\/strong><\/td>\n<\/tr>\n
\u0627\u0644\u062d\u062c\u0645<\/td>\n3\/8 \u0628\u0648\u0635\u0629<\/strong> \u2014 single size. For 3\/8\u2033\u20134\u2033 full port see the two-piece V-2AM<\/a>.<\/td>\n<\/tr>\n
\u0645\u0627\u062f\u0629 \u0627\u0644\u0647\u064a\u0643\u0644<\/td>\n316 (CF8M) or 304 (CF8) \u2014 both made to order<\/strong><\/td>\n<\/tr>\n
\u0645\u0633\u062a\u0648\u0649 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0645\u0633\u0645\u0648\u062d \u0628\u0647<\/td>\n1000 WOG<\/strong><\/td>\n<\/tr>\n
\u0627\u0644\u0645\u064a\u0646\u0627\u0621<\/td>\nReduced port<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0642\u0639\u062f<\/td>\nPTFE<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0648\u0636\u0648\u0639<\/td>\nPT, NPT or PF \u2014 made to order<\/strong>, specify when you ask for a quote<\/td>\n<\/tr>\n
\u0627\u0644\u0645\u0634\u063a\u0644<\/td>\nRack-and-pinion, aluminium alloy \u2014 double acting (DA)<\/strong> \u0623\u0648 spring return (SR)<\/strong><\/td>\n<\/tr>\n
\u062a\u0631\u0643\u064a\u0628 \u0627\u0644\u0645\u0634\u063a\u0644<\/td>\nISO 5211, integral to the valve body \u2014 no bracket, no coupling<\/strong><\/td>\n<\/tr>\n
\u0625\u0645\u062f\u0627\u062f \u0627\u0644\u0647\u0648\u0627\u0621<\/td>\n4 \u2013 8 bar<\/strong><\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\nValve body \u0645\u0646 \u221220 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +180 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/strong>; actuator \u221220 \u00b0C to +80 \u00b0C<\/td>\n<\/tr>\n
\u0627\u0644\u062a\u062d\u0643\u0645<\/td>\nOn\/off only.<\/strong> This valve does not throttle \u2014 see below.<\/td>\n<\/tr>\n
\u062e\u064a\u0627\u0631\u0627\u062a<\/td>\n\u0635\u0645\u0627\u0645 \u0627\u0644\u0645\u0644\u0641 \u0627\u0644\u0644\u0648\u0644\u0628\u064a NAMUR<\/a>, limit switch box<\/td>\n<\/tr>\n
Supplied as<\/td>\nValve + actuator, assembled and tested \u2014 or valve only<\/strong> with the ISO 5211 pad, to fit your own actuator<\/td>\n<\/tr>\n
\u0628\u0644\u062f \u0627\u0644\u0645\u0646\u0634\u0623<\/td>\n\u0635\u064f\u0646\u0639 \u0641\u064a \u062a\u0627\u064a\u0648\u0627\u0646<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

On\/Off Only \u2014 Do Not Buy It to Throttle<\/h2>\n

This valve opens and it closes. It is not a control valve.<\/strong> We do not offer a positioner for it, and we will not sell you one that is half-open all day.<\/p>\n

A ball valve held part-way open puts the full flow across one edge of the ball and one edge of the seat. The PTFE cuts, the seat leaks, and you are back to us in a year. If you need to modulate flow rather than shut it, tell us what you are trying to do and we will say honestly whether we have the right valve for it.<\/p>\n

DA or SR \u2014 Which Actuator?<\/h2>\n