Vanne à bille à soudure bout à bout — Extrémités allongées, 3 pièces, acier 316, 1 000 WOG, passage intégral

Description du produit

A robinet à bille à soudure bout à bout 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.

Dimensions

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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 Those are the two numbers a welder actually needs, and most valve makers do not publish them.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.

Contenu — Liste complète des matériaux

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

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Caractéristiques techniques

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.

À sa place

• 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.

Acheter chez nous

• Il n'y a pas de quantité minimale de commande.
• Fabricant, et non société de négoce. Notre propre usine à Taïwan, spécialisée dans la fabrication de vannes en acier inoxydable depuis 1999.
• Certificat du moulin sur demande.
• Délai de réponse pour les devis : dans les 24 heures.

Demander un devis — réponse sous 24 heures →

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

FAQ

Why are the weld ends extended?

To keep welding heat away from the PTFE seats. On a standard butt weld valve the weld sits close to the body and the heat travels down the metal into the seats — which is why a valve can pass inspection, get welded in, and then leak on the pressure test. The extra length acts as a heat sink, so you can weld the valve in fully assembled without dismantling it.

What pipe does this valve fit?

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.

Quelles tailles proposez-vous ?

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

Quelle est la pression nominale ?

1 000 WOG.

Est-ce un port complet ?

Yes.

Can I get it with an actuator?

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

Avez-vous un volume minimum de commande ?

Non. Dites-nous ce dont vous avez besoin et nous vous ferons un devis.