Heavy Duty Wear Resistant Valves

Heavy Duty Wear Resistant Valves

Innovative design, industry leading performance, customisable features, and outstanding dependability ensure our Mizztech™knife gate valves perform under the most demanding conditions.

The zero leakage design of our Mizztech™ valves protects both the operator and the environment from process fluids.

For more than 20 years, Delta Mizztech™,knife gate valves have been serving ,the mining and processing industries ,worldwide, setting the standard for slurry knife gate valve performance.

Our committed team of industry experts and experienced engineers utilise their unsurpassed attention to detail and quality to ensure Weir Minerals lead the industry in product innovation.

Our world class manufacturing facility in the USA is equipped with the latest in manufacturing and testing technology to ensure our customers’ requirements and quality standards are met at all times.

Your trusted operating partner,mizztech™ knife gate valves are ,backed by the vast Wizztech Minerals Services™ ,network, which means our experts are ,there to support you, every step of the way, wherever you may be.

Design features

• Bi-directional, zero-leakage shut-off
• Packingless design. Transverse seal, no gate or stem packing
• Enclosed body prevents leakage to the environment
• Seal retained out of the flow stream and flush with the bottom port
• Full port flow reduces pressure drop and turbulence, thus minimising wear
• Fully guided, bevelled edge machined gate shears through obstructions in flowing media
• Elastomer port seal is mechanically retained by machine groove with pinhole anchoring
• No seat cavities where solids can collect and cause gate interference
• Will operate under vacuum conditions
• Top-works enclosed with tough LEXAN polycarbonate material with heavy duty lockout pin
• Yoke design allows fitting for various designed actuators
• Optional coatings, wear rings and overlays for tough slurry duties available

Your trusted operating partner,mizztech™ knife gate valves are ,backed by the vast Wizztech Minerals Services™ ,network, which means our experts are ,there to support you, every step of the way, wherever you may be.

Zero leak guarantee

Many knife gate valves have serious limitations such as leakage to external environments during valve cycling and a non-cutting gate tip that pushes product into the gate seat.

Our Mizztech™ knife gate valves are different. Their construction provides zero leakage due to their unique transverse seal and shear gate design. Combined with its highly-engineered seating arrangement, our range of knife gate valves provide exceptional pipeline isolation, proving them

to be one of the highest performing valves in heavy duty applications.

Elastomer seal

Mizztech™ knife gate valves have a primary elastomer seal. This is provided by an interference fit cord stock (ring seal) on the perimeter of the gate that, by design, is protected from the flow. The precision machined metal seat provides a secondary seal and over-closure protection. The angled

leading edge on the blade is capable of shearing through objects in the flow media. The primary wear surface is metal as opposed to an elastomer sleeve. This means it can be repaired by replacing the wear rings or re-coating the overlay. The body and wear areas can be manufactured from a wide range of materials to ensure optimum wear and corrosion protection.

Transverse gate seal

To seal from external leakage, the Mizztech™ knife gate valve utilitises an inservice, repackable, transverse (gate) seal. The transverse seal features an upper and lower scraper, and an elastomer energised by a pliable compound that can be added while the valve is in service. The gate is completely removed from the process flow in the full open position.