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TO-Series Triple Offset Butterfly Valve

Product Description

The TO-Series triple offset butterfly valve delivers metal-to-metal seating with zero leakage across the full pressure range. Its triple offset geometry eliminates friction between seat and seal during the first 90% of travel, extending service life in the most demanding isolation duties. Suitable for high-cycle, high-temperature and fire-safe applications.

Technical Specifications

Size Range 3" – 72" (DN80 – DN1800)
Pressure Class ASME Class 150 / 300 / 600 / 900 / 1500
Body Type Wafer, Lug, Double Flanged, Butt Weld
Body Material WCB, CF8, CF8M, CF3M, Duplex, Alloy
Seat / Seal Metal seated (lamellar / solid), fire-safe
Temperature -46°C to 550°C (-50°F to 1022°F)
End Connection Wafer, Lug, Flanged RF/RTJ, Butt Weld
Standard API 609, ASME B16.34, API 607 / 6FA fire-safe

Applications

Oil & gas isolationRefinery and petrochemicalPower plant main steamFire-safe critical service

Frequently Asked Questions

What is the minimum order quantity for this product?

For standard specifications we accept trial orders starting from a small quantity. For customised production the MOQ depends on the specification — please contact our sales team for details.

How long is the production lead time?

Standard items are typically ready within 15–25 working days after order confirmation. Customised products may require additional time, which we will confirm before you place the order.

Do you provide technical drawings and certificates?

Yes. We can provide dimensional drawings, material certificates and third-party inspection reports on request.

What are your shipping terms?

We normally ship on FOB, CIF or EXW terms. Please tell us your destination port and we will quote the most suitable option.

Industrial Valves · Butterfly Valve

TO-Series Triple Offset Butterfly Valve

Metal-seated triple offset butterfly valve for critical isolation in oil & gas, petrochemical and power plants. Fire-safe, zero leakage at high temperature.

Key Specifications

material
Carbon Steel · Stainless Steel 316 · Duplex
pressure
Class 150 · Class 300 · Class 600 · Class 900 · Class 1500
medium
Oil · Gas · Steam · Corrosive Fluid
connection
Wafer · Lug · Flanged

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