突合せ溶接式ボールバルブ — 延長エンド、3ピース、316、1000 WOG、フルポート

製品説明

A 突合せ溶接式ボールバルブ in 316 stainless steel, three-piece body, 1000 WOG, full port, 3/8″ to 4″. The weld ends are extended — noticeably longer than a standard butt weld end — and that is the entire point of this valve.

Read the two sections below before you order. One tells you why the ends are long. The other tells you what pipe this valve fits, and what pipe it does not.

Why the Weld Ends Are Long

A ball valve seals on PTFE. PTFE begins to degrade well below the temperature of a weld pool.

On a standard butt weld valve, the weld sits close to the body — and the heat travels down the metal into the seats. That is why people weld a valve in, pressure-test the line, and find the valve leaking. The seals were cooked during installation, before the valve ever saw a drop of product.

The extended ends move the weld away from the seats. The extra length is the heat sink. You weld the valve in fully assembled — no dismantling, no removing the ball and seats, no reassembling it in a trench.

And because the body is three-piece, you can still take it apart afterwards: undo the body bolts, lift the centre section out, replace the seats, put it back. The ends stay welded in the line. Nothing gets cut out.

What Pipe Does It Fit? (Read This)

We would rather lose the order than have you weld this valve into the wrong pipe.

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If you are running Schedule 40 pipe, this is the wrong valve and we will tell you so. Send us the pipe spec — standard, size and schedule — before you order, and we will confirm whether this valve mates with it. That one email is cheaper than a valve you cannot use.

寸法

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ØD is the pipe outside diameter. T is the wall thickness. Those are the two numbers a welder actually needs, and most valve makers do not publish them. Check them against your pipe before you order.

中身は？ — 材料一覧（全リスト）

All seventeen parts, and what each one is made of.

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仕様

Not Sure Butt Weld Is What You Want?

Welding a valve into a line is permanent. If you would rather be able to unscrew it, or if your pipe is not JIS Sch 5S, look at these instead:

• Three-piece ball valve, PT threaded / socket weld / butt weld — same three-piece serviceable body, but you choose the end connection. Standard butt weld ends, not extended.
• Pneumatic version of this valve — same extended butt weld body, with an air actuator on top.

あるべき場所

• Welded stainless lines that still need servicing — the three-piece body opens in place, so the seats can be replaced without cutting the valve out.
• JIS Sch 5S thin-wall piping — water, oil, gas, process lines up to 1000 WOG.
• Installations where a threaded joint is not acceptable — no thread, no sealant, no leak path.

弊社でのご購入について

• 最低注文数量はありません。.
• 商社ではなく、メーカーです。. 台湾に自社工場を構え、1999年よりステンレス製バルブを製造しています。.
• 製粉証明書はご要望に応じて発行いたします。.
• お見積りの回答：24時間以内。.

お見積り依頼 — 24時間以内に返信いたします →

Send us your pipe spec — standard, size and schedule — and we will confirm the valve mates with it before you commit.

よくある質問

なぜ溶接端部を延長するのですか？

PTFE製シートに溶接熱が伝わらないようにするためです。 標準的な突合せ溶接バルブでは、溶接部が本体に近いため、熱が金属を伝ってシートに伝わってしまいます。これが、バルブが検査に合格し、溶接で取り付けられたにもかかわらず、耐圧試験で漏れが発生する原因となります。この余分な長さがヒートシンクとして機能するため、バルブを分解することなく、完全に組み立てた状態で溶接することができます。.

このバルブはどのパイプに適合しますか？

JIS pipe dimensions, Schedule 5S wall thickness only. It will not mate cleanly with Schedule 40 or heavier pipe without machining a transition — the wall thickness does not match and the bore will step at the weld. Send us your pipe standard, size and schedule and we will confirm before you order.

Do you make other schedules?

No. Schedule 5S only.

Can I service the valve after it is welded in?

Yes — that is the reason for the three-piece body. Undo the body bolts and lift the centre section out to replace the seats. The welded ends stay in the line. Nothing is cut out.

Do I have to dismantle the valve before welding?

No. The extended ends exist so you do not have to. Weld it in assembled.

どのようなサイズを取り扱っていますか？

3/8″ to 4″. Ten sizes, all in the dimension table on this page, including pipe outside diameter and wall thickness.

定格圧力はどれくらいですか？

1000 WOG。.

フルポートですか？

Yes.

Can I get it with an actuator?

Yes — the pneumatic version is the same extended butt weld body with an air actuator fitted.

最低注文数量はありますか？

いいえ。ご要望をお聞かせいただければ、お見積もりいたします。.