Flowrox™ slurry knife gate valves
Isolate the flow in demanding conditions
Heavy duty slurry knife gate valve isolates flow even in the most demanding process conditions. The bi-directional flow tolerates backflow and elastomer sleeves on both sides of the gate provide tight shut off. Flowrox knife gate valve follows the concept of the ease of maintenance. The valve body is cast in one piece which eliminates the need for sealing between the body halves. Load distribution ring is integrated into the valve sleeves. The valve contains only two service parts; ring sleeves and secondary seal.
Benefits and features
Bi-directional flow
Bi-directional flow tolerates backflow. 100% isolation.
Free flow
Full bore enables free flow of process medium.
Wear resistant
Only the ring sleeves in contact with the process medium.
Simple to install and service
Face-to-face according to industry standards. Contains only two service parts; ring sleeves and gland packing.
No over compression during installation
Integrated load distribution ring. (SKF, SKW) Steel retaining flange is supporting the ring sleeve (SKH)
Slurry wafer knife gate valve (SKW)
Slurry wafer knife gate valve (SKW) is designed for heavy duty purposes to isolate flow, even in the most demanding process conditions. The complete valve is built around an ease of maintenance concept and it contains only two service parts: ring sleeves and secondary seal.- Improved performance – Integrated load distribution ring
- Ease of maintenance – Universal tower design
- Simple installation – One peace body with lockout pins
Typical installations:
- Tailings slurry lines
- Slurry pump isolation
- Thickener feed and discharge lines
- Flotation isolation
The SKW valves are available in sizes DN50–600.
Slurry flanged knife gate valve (SKF)
Slurry flanged knife gate valves (SKF) are equipped with flanges. They isolate the flow even in the most demanding process conditions. They contain only two service parts: ring sleeves and a secondary seal.
- Improved performance – Integrated load distribution ring
- Ease of maintenance – Universal tower design
- Simple installation – One piece body with lockout pins
Typical installations:
- Tailings slurry lines
- Slurry pump isolation
- Thickener feed and discharge lines
- Flotation isolation
The SKF valves are available in sizes DN80-600.
New design for big SKF valves
Knife gate valve actuator cylinders repositioned to the side
We have repositioned actuator cylinders to the side in bigger slurry knife gate valves over DN 900. The benefits are:
- Significantly reduced height – Easier to install, much less empty room above the valve is required.
- Increased safety – Installation and maintenance is not done high in the air.
- Easier maintenance – All maintenance access points are easily accessible, only 2 meters high from the ground.
Available in sizes from DN 900 to DN 1500. They can handle pressures from 10 and down to 4 bar, depending on the size. Flange drillings PN10 or ANSI 150, others on request. The actuator can be either hydraulic or electric.
Entire valve body cast in one piece
Flowrox slurry knife gate valve body for sizes DN 900 – DN 1500 is entirely cast in one piece. This means there are no risks for leaking through the body. The new valve construction is simpler and more robust. Fewer parts also mean savings in spare part inventory and maintenance time.
High pressure knife gate valve for slurries (SKH)
Isolate the flow even with 20 bar pressure
Slurry knife gate valve (SKH) is designed for higher pressures (up to 20 bar) in heavy duty purposes to isolate the flow. Just as previously presented SKW and SKF valves, SKH valves also contain only two service parts: ring sleeves and gland packing.
- Ease of maintenance – Universal tower design
- Simple installation – One piece body with flushing ports
The SKH valves are available in sizes DN80–600.
Typical installations:
- Tailings slurry lines
- Slurry pump isolation
- High-density slurry line
- Ash slurry disposal
Tower design fits well with smaller knife gate valves.
Flowrox SKF knife gate valves DN 900–1500 use a new approach. Instead of tower design, two actuator cylinders are positioned to the sides.
New design compared to traditional tower design.
Illustrated on the case of slurry knife gate valve size DN 1200.
Flowrox SKH knife gate valve for higher pressures.
Technical specifications
Downloads
Related products and services
Flowrox™ PVG and PVEG pinch valves
Flowrox PVG and PVEG pinch valves are robust and cost effective with simple, single-sided closing mechanism. PVG valve has a strong valve body and opening tags in the sleeve as a standard. PVEG valve has a corrosion resistant and light-weight plastic body. Through the reliability and structure, both kinds of valves offer substantial savings based on improved performance, long service lifetime and low total cost of ownership. Flowrox PVG and PVEG valves are ideal for low cycle applications involving abrasion, corrosion and aggressive slurries
Flowrox™ heavy duty pinch valves
Flowrox PV, PVE and PVE/S heavy duty pinch valves are designed for shut off and control applications involving abrasive or corrosive slurries, powders or granular substances. In the open position, the valve is full bore with no flow restrictions. During closing, two pinch bars squeeze the valve sleeve shut on the center line. Bubble tight shut-off is provided even if solids have built up on the sleeve wall.
Spare parts for Flowrox™ valves
We manufacture and deliver high-quality spare parts for all Flowrox™ valves. Genuine parts ensure that they are certified and specifically suited for your process. Elastic sleeve is the core of the FlowroxTM valve. It is the only part in contact with the process medium.
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