Diaphragm Valves

A diaphragm valve uses a flexible membrane to form a seal, keeping process fluid separate from the working parts. This makes it well suited to pharmaceutical, food and dairy, and brewing lines requiring hygienic or sterile service, as well as wastewater and chemical applications involving corrosive or abrasive media. The range includes weir-type bodies in 316L stainless steel, with EPDM or PTFE diaphragm options.

Inox Fittings Australia stocks diaphragm valves for hygienic and industrial applications, with delivery available Australia-wide.

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Diaphragm Valve tube Butt Weld 316 Stainless
Triclamp Diaphragm valve 316 Stainless - Inox Fittings
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Diaphragm Valve tube Butt Weld 316 Stainless

Price
$240$540
Triclamp Diaphragm valve 316 Stainless
Triclamp Diaphragm valve 316 Stainless - Inox Fittings
Triclamp Diaphragm valve 316 Stainless - Inox Fittings
Quick View

Triclamp Diaphragm valve 316 Stainless

Price
$240$540

Weir-Type Diaphragm Valve Design

A weir-type diaphragm valve has a raised seat and a flexible membrane that acts as the sealing element. The actuating mechanism sits above the membrane and outside the flow path, helping keep process media away from the operating components.

The weir-type body is designed to minimise internal crevices and dead zones, making the diaphragm valve easier to clean between batches or product runs. It may be suitable for CIP and SIP processes, depending on the diaphragm material, system design and operating conditions. In corrosive or abrasive applications, separating the media from the actuating mechanism can also help limit component wear.

Choose Diaphragm Valves from Inox Fittings Australia

Inox Fittings Australia supplies diaphragm valves as part of broader stainless steel project packages, helping procurement teams consolidate orders for mechanical piping projects. Browse our range of stainless steel fittings and tube clamp hardware to complete your line specification.

Contact Inox Fittings Australia today to discuss your requirements or request a quote.

FAQs

How does a diaphragm valve work?

The actuator pushes the flexible membrane down onto the weir seat, closing the flow path. Releasing the actuator allows the membrane to lift and flow to resume. Process fluid stays on one side of the membrane, away from the actuating mechanism and bonnet.

Where are diaphragm valves used?

A diaphragm valve is used in pharmaceutical manufacturing, food and beverage processing, dairy, brewing, and winery operations. They are also specified for wastewater treatment and chemical processing where media may be corrosive, abrasive, or require careful containment.

What diaphragm materials are available?

EPDM is commonly selected for food, dairy and pharmaceutical processing, including compatible CIP and SIP duties. PTFE-based diaphragms are often chosen for chemically aggressive media or high-purity applications. Material selection should account for the diaphragm grade, process media, cleaning chemicals, temperature and operating conditions.

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