Push-through Knife Gate valve
specially engineered to last in extreme working conditions for abrasive fluids in the mining industry.
Beyond the valve
Paravalves Dmmond Push-through knife gate valves are engineered and built to handle extreme working conditions for abrasive ﬂuids and high pressure services. In addition, our SA Type push-through knife gate valves provide a bubble tight shutt-off and extended service life for the most demanding mining and mineral processing applications.
The main characteristic of the slurry knife gate valve is that it provides a full continuous ﬂow. In open position the two rubber wear-resistant sleeves are in close contact with each other preventing the ﬂow get inside the valve body. Installation of this equipment is done between pipeline ﬂanges, which ﬂange drilling can be made according to customer speciﬁcations or Paravalves standard.
Zero atmospheric leakage.
Even for gas or high pressure water applications.
At paravalves Dmmond SA push-though knife gate valves special top gate sealing concept is designed to ensure full tightness to the atmosphere even for gas or high pressure water applications.
Every design is fully hydrostatically tested at our facilities according to API 598, testing body cavity at 1.5 times the design pressure.
True bi-directional zero leak shut-off.
Where body avoids ﬂow abrasion.
The design allows ﬂow media with high consistency either for normal or reverse ﬂow due to the bi-directional double seat design.
The main characteristic of the slurry sleeved knife gate valve is that it provides a full continuous ﬂow. In open position the two rubber wear-resistant sleeves are in close contact with each other preventing the ﬂow get inside the valve body.
Engineered to last.
Even for extreme working conditions with abrasive ﬂuids.
From optimized parametric design 3D modeling tools, to Finite Element Analysis (FEA) and Computational Fluid Dynamics (CFD) systems, our reliable push-though knife gate valves are ready to be manufactured with conﬁdence.
Every component is designed and validated by top-notch softwares by the paravalves engineering team.
Integral flange seals.
Designed to avoid using ﬂange gaskets in the pipeline.
The knife gate rubber sleeves have been designed to avoid using ﬂange gaskets in the pipeline. Its unique design provides a integral ﬂange seal ensuring no leak between the knife gate valve and the pipeline.
Installation of this equipment is done between pipeline ﬂanges, which ﬂange drilling can be made according to customer speciﬁcations or paravalves standard.
Replaceable Rubber sleeves.
Easily replace the snap-in sleeves.
The top quality sleeves can be easily replaced on ﬁeld for the knife gate. A wide range of materials are able to withstand abrasive ﬂow medias and can give a great wear resistance performance for severe service applications.
Our unique sleeves have been performed as precision molded elements with high strength rubbers to protect the wetted parts from corrosion and abrasion.
Easy maintenance. A cost-effective solution.
Body protected for a longer valve life.
The monoblock body construction and the snap-in sleeves design allows maintenance to be an easy work that can be performed on ﬁeld. There is no need to return the valve to factory for repair as a sleeved solution can be replaced on-site.
One design to rule them all.
Direct handwheel, Gearbox, Electric actuator, Pneumatic or Hydraulic cylinder actuation types are possible with Dmmond SA Knife Gate Valves. The design allows actuators to be interchangeable each other even without removing the valve from the pipeline. It most cases, drilled according to ISO 5210 standard.
Operating pressures up to 50bar.
Sizes up to DN1400.
Low pressure drop.
Bi-directional leak-tight design.
Rising or non-rising spindle designs.
Robust and reliable designs.
Customised designs on request.
For On/Off services.
Flange drilling according to international standards.
Different connection types.
Epoxy paint for carbon steel components.
Actuator connection (interchangeable) according to ISO 5210.
Pneumatic, hydraulic, electric or manually operated actuator.
Special materials and surface treatments on request.
Over time, PARAVALVES team has had the chance to analyze not only the design of these valves but the specific applications they are used in as well in a cost effectiveness mind. From the pulp and paper industry and wastewater treatment to the mining industry, we’re confident the PARAVALVES Dmmond Series Knife Gate Valves will be a great solution for the following industries:
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