Buy Butterfly Valves Online in Australia
Butterfly Valve Selection — Quick Reference
Butterfly valves = quarter-turn flow control with disc rotating perpendicular to flow. Compact + low cost + quick operation. Selection turns on seat material (chemical compatibility), disc type, body style (wafer / lug / flanged), pressure rating.
| Seat Material | Best For | Temp / Service |
|---|---|---|
| EPDM Seat | Water + air + steam + mild chemicals — workshop standard | -40 to 120°C |
| NBR (Nitrile) Seat | Oil + fuel + petroleum service | -30 to 100°C |
| FKM (Viton) Seat | Aggressive chemicals + high temp | -20 to 200°C |
| PTFE Seat / Lined | Universal chemical resistance — most aggressive | -50 to 200°C |
| Silicone Seat | Food + pharma + extreme temp | -60 to 250°C |
| Wafer Body Style | Sandwiched between flanges — economical install | Standard 2-flange wafer install |
| Lug Body Style | Threaded lugs — dead-end service + line-break-on-one-side | Can isolate downstream while upstream disassembled |
| Flanged Body Style | Direct flanged connections both sides | Heavy industrial + high pressure |
| Stainless Steel Disc (304/316) | Most common — wide chemical compatibility | Per chemistry |
| Aluminium Bronze Disc | Marine + chloride service | Saltwater + brackish |
| Lever Operator (Standard) | Manual control — workshop + general service | Up to ~150mm bore typical |
| Gear Operator (Worm Drive) | Larger valves + precise position | ≥200mm bore + heavy actuation force |
| Pneumatic / Electric Actuator | Automated control + remote operation | Per process automation spec |
Critical: Match seat to fluid — EPDM swells in oil; NBR swells in aromatic solvents; FKM/Viton attacked by amines + ketones. Check chemical resistance chart against actual service fluid. NEVER use butterfly valve for FLOW THROTTLING in slurry/abrasive service — disc edges erode rapidly. Brands: AAP, Dixon. Companion: gate valves, ball valves, butterfly valve guide.
Industrial Butterfly Valves — EPDM, NBR & Stainless Disc
AIMS Industrial supplies industrial-grade butterfly valves for water, chemical, and fluid handling applications across mining, agriculture, processing, and civil industries. Our range from AAP and Dixon covers EPDM and NBR seat butterfly valves with stainless steel discs, roll groove configurations, and gear operators — with repair kits also available for ongoing maintenance.
Butterfly Valve Types & Configurations
- EPDM Seat Butterfly Valves: AAP EPDM butterfly valves with stainless steel discs are suited to water, mild acid, and general industrial fluid service — excellent temperature resistance for outdoor and processing applications.
- NBR Seat Butterfly Valves: AAP NBR (nitrile rubber) seat butterfly valves handle petroleum-based fluids and oils — designed for fuel, hydraulic, and lubricant service where EPDM is unsuitable.
- Roll Groove Butterfly Valves: AAP roll groove butterfly valves provide quick installation and removal in Victaulic-style grooved piping systems — ideal for mining and large-bore industrial pipework.
- Gear Operators: AAP gear operators allow torque-assisted manual actuation on large-bore butterfly valves — essential for high-pressure and large-diameter valve control.
- Repair Kits: Dixon butterfly valve repair kits in red silicone and black EPDM allow field servicing of Series butterfly valves without full valve replacement — reducing downtime and maintenance costs.
Butterfly Valve Selection & Installation
- Seat Material vs. Media: EPDM seats are standard for water and dilute chemicals; NBR seats are required for petroleum-based fluids. Always verify chemical compatibility before selection.
- Pressure Rating: Confirm working pressure and temperature ratings against system requirements — AAP butterfly valves are rated for standard industrial water and processing service conditions.
- End Connection: AIMS stocks wafer, lug, and roll groove end configurations — wafer style fits between flanges for cost-effective installation; lug style allows single-side pipe removal without full valve disassembly.
- Actuation Options: Manual lever handles are standard for smaller valves; gear operator handles are recommended for 150mm and larger bore sizes to reduce operating torque requirements.
Australian Business, Local Supply: As a proudly Australian business since 1988, we stock locally and work with trusted local Australian manufacturers and distributors to ensure fast, reliable supply.
Browse the full range above, or contact our team for expert advice on the right product for your application or reach out if you need a quote. Fast dispatch from our Australian warehouse.
People Also Ask — Butterfly Valves
Q: What's a butterfly valve and where is it used?
A butterfly valve is a quarter-turn valve with a rotating disc (the 'butterfly') that closes or opens the flow path. Lightweight, compact, and lower cost than ball valves for large diameters. Used in industrial piping systems, HVAC, water treatment, chemical processing, and fluid transfer. Operation: 90-degree handle turn opens/closes. Capable of throttling (partial open) but typically used full-open or full-closed. See [Butterfly Valve Guide](/blogs/product-guides/butterfly-valve-guide).
Q: Wafer or lug butterfly valve?
Wafer butterfly: thin body sandwiched between flanges using flange bolts that pass through the entire bolt circle. Lowest cost, requires pipework on both sides for installation. Lug butterfly: threaded inserts in the valve body allow installation between flanges OR removal of one side without disturbing the other. More versatile, allows end-of-line service. For simple line-mounted installations: wafer. For applications requiring end-of-line capability: lug. Most workshop applications use wafer for cost-effectiveness.
Q: Manual or actuated butterfly valve?
Manual (handle-operated): direct operator control, lowest cost, suits accessible installations. Lever handle for ¼-turn quick operation; geared handwheel for high-torque applications. Actuated (pneumatic or electric): remote operation, suits automated systems and inaccessible installations. For workshop installations: manual is standard. For process control applications: actuated. Match to operational requirement.
Q: What disc material for which fluid?
Disc material must withstand the fluid chemistry. Cast iron: water, low-pressure air. Stainless 304: general industrial fluids, moderate chemicals. Stainless 316: aggressive chemicals, marine, food/pharma. Aluminium bronze: seawater, marine. PTFE-lined: most aggressive chemicals. Match disc material to fluid. Don't use cast iron for any aggressive chemical or salt-water application.
Q: Seat material — EPDM, NBR, Viton?
EPDM: workshop standard for water, mild chemicals, hot water — temperature range -40 to +120°C. NBR (nitrile): oils, fuels, hydraulic fluids. Viton (FKM): aggressive chemicals, high temperature (up to 200°C continuous). PTFE: most aggressive chemicals, food/pharma. The seat is the sealing element — match to fluid AND temperature. Wrong seat fails rapidly. For workshop daily water systems: EPDM seat. For oil systems: NBR. For chemical service: Viton or PTFE.