Butterfly Valves FAQ – Pipetech Supplies

Below you'll find answers to the most common questions we receive about our butterfly valve collection. If you need further technical guidance or help selecting the right valve for your application, our team is ready to assist.

What types of butterfly valves does Pipetech Supplies offer?

We stock a range of butterfly valves including wafer-pattern, lug-pattern, and double-flanged designs. Our collection covers manual lever-operated valves, gearbox-operated valves for larger sizes, and actuated options for automated systems. Materials include cast iron, ductile iron, stainless steel, and PVC, so you can match the valve to your specific medium and operating conditions.

What pressure ratings are available for your butterfly valves?

Our butterfly valves are available in industry-standard pressure ratings including PN10, PN16, and PN25, depending on the model and size. Certain valves also conform to ANSI 150/300 flange standards. Always check the product listing for the exact pressure and temperature ratings applicable to each valve.

Are your butterfly valves suitable for potable water applications?

Selected butterfly valves in our range carry WRAS (Water Regulations Advisory Scheme) approval, making them suitable for use in potable water systems. Look for the WRAS-approved designation on the individual product page, or contact us if you need confirmation before ordering.

What sizes of butterfly valves do you carry?

We typically stock butterfly valves from DN50 (2") up to DN300 (12") and beyond, depending on the valve type and body style. Larger sizes are often available on request. If you need a size not shown in the collection, get in touch and we can source it for you.

How do I choose between a wafer and a lug butterfly valve?

Wafer butterfly valves sit between two flanges and are held in place by the bolting of the pipeline flanges together. They are lighter and more cost-effective for general isolation duties. Lug butterfly valves have threaded inserts (lugs) that allow one side of the pipeline to be disconnected without disturbing the other, making them the better choice for dead-end service or where you need to remove downstream pipework for maintenance.

Do your butterfly valves comply with ISO 5211 for actuator mounting?

Many of our butterfly valves feature an ISO 5211 top-flange interface, which allows direct mounting of pneumatic or electric actuators without the need for custom brackets. This standardised connection simplifies automation upgrades. Check the specification tab on each product page for confirmation of ISO 5211 compliance.

Can I get next-day delivery on butterfly valves?

Yes. Most butterfly valves held in stock qualify for next-day delivery across the UK when ordered before the cut-off time shown at checkout. Non-stock or special-order items may have a longer lead time, and we will confirm the expected dispatch date at the point of order.

What disc and seat materials are used in your butterfly valves?

Disc materials commonly include stainless steel (SS316 or SS304), ductile iron with a nickel or epoxy coating, and aluminium bronze for more demanding environments. Seat materials range from EPDM and NBR (Nitrile) to PTFE, each suited to different media and temperature ranges. Selecting the correct combination ensures reliable sealing and long service life for your specific application.

Are your butterfly valves suitable for use with chemicals or aggressive media?

Certain models with PTFE-lined seats and stainless steel discs are designed for chemical service. PVC butterfly valves are also available for corrosive or aggressive media at lower pressures and temperatures. We recommend confirming chemical compatibility with the valve's material data sheet or contacting our technical team before specifying a valve for aggressive duty.

How do I request a quote or get technical support for a butterfly valve order?

You can request a quote directly through our website by using the enquiry form on any product page, or by emailing or calling our sales team. When getting in touch, it helps to provide the pipe size, pressure rating, media type, and operating temperature so we can recommend the most suitable valve quickly. Our team draws on decades of combined industry experience to support specification-driven procurement.