SQS Square Knife

Squared or rectangular knife gate valves for discharging loaded fluids with solids in silos.


Squared Knife Gate Valves

Dmmond SQ Squared Knife Gate SQS Square Knife

The Paravalves Dmmond SQS welded construction knife gate valve is designed with a square or rectangular section for the main inlet and outlet bore. The precision machined knife gate edge is capable of easily cutting through media while maintaining the metal seat in the valve. The knife gate is fully guided with bronze supports throughout the stroke, improving valve life and performance for the most demanding applications. Mainly used for handling fluids heavily loaded with solids in gravity discharge in horizontal valve position.

Customized valves

We design and manufacture customized solutions for each customer and need.

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Directives and standards

  •  PED 2014/68/UE CAT-1 Module A.
  • 2014/34/UE CAT 3 ZONE 2 AND 22.


  • Working pressures up to 3bar.
  • Sizes up to 1000x1000mm.
  • Seat designed according to the application.
  • High flow rates and low pressure drops.
  • Inlet deflector cone on request.
  • Flushing/plug ports included.
  • Unidirectional design (metalic or soft).
  • Easy maintenance.
  • Rising or non-rising stem design.
  • Robust and reliable design.
  • Tailor-made solutions.
  • On/Off service.
  • Flange drillings to customer request.
  • Epoxy coating for carbon steel components.
  • ISO 5210 flange drillings for interchangeable actuators.
  • Special materials or surface treatments on request.
  • Pneumatic, Hydraulic, Electric or manual operation.


Squared knife gate valve hydraulic
Squared knife gate valve
Squared knife gate valve silos outlet
Válvula de cuchilla o guillotina cuadrada hidráulica
Válvula de cuchilla o guillotina cuadrada

Related industries

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:


Can we help you with anything?

If you need a quotation for any of our products, have any questions, suggestions or want to distribute our valves, we will be more than happy to answer you.