Gasport GG

Guillotine dampers

Guillotine damper valves for industrial gas applications with round or square bore section.

Gasport GG Guillotine dampers
At paravalves, every development has in-house engineering and manufacturing facilities for a wide range of industrial applications anywhere in the world.
We work from the delivery and dedication, from the person. Always open to any need, project, industry and customer. With the proactivity and intelligence necessary to face any challenge proposed to us. An engineering and manufacturing team that goes hand in hand with the customer, to always offer a reliable product, with high performance and durability.
Our Gasport GG type dampers are divided in different types depending on the section shape.

Beyond the valve

Guillotine damper valves (also known as knife gate) are made as a welded assembly construction and usually made for on/off gas applications for isolation services. The installation of this equipment is done between pipeline flanges, which flange drilling can be made according to customer specifications or PARAVALVES standard. Face to face determines the distance between flanges and this can also be taylor-made to comply with customer project. Generally these equipments are installed in a vertical stem-line position, but horizontal assemblies are also possible with PARAVALVES dampers. Wafer type or ButtWelding ends can also be supplied on request.

Our engineered guillotine dampers are made to work in both flow directions as a bidirectional design upon request. On open position, the conduit is completely clear and therefore, the pressure loss on the system is very low. The seat can directly make contact with a metal seat plate ensuring a maximum leak of 0.5%Kv value. Soft sealing option can also be supplied on request, providing a more tightness damper seat. Squared or rectangular shape can be manufactured to fit customer special gas conduits. Also rounded flange design can be supplied with flange drilling according to any international standard or customer special request.

Up to
In all sizes
0.5 bar/7.4 psi
Up to

Customized valves

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

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Seat configurations

Made to fit all range of applications

The wide range of seats available for our Gasport GG range allows us to cater for a wide range of applications, covering everything from the simplest to those requiring zero leakage.

Stem extensions and flexible wall brackets available.

Adapt to any environment.

Different types of wall brackets, extensions, control turrets and other elements can be easily developed by the paravalves technical team to adapt the valve to the special needs of any customer.

Zero atmospheric leakage.

Even for gas or high temperature applications.

At paravalves Gasport GG guillotine or knife gate damper shaft packing system is designed to ensure full tightness to the atmosphere even for gas or high temperature applications.

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 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.

One design to rule them all.

Direct handwheel, Gearbox, Electric actuator, Pneumatic or Hydraulic cylinder actuation types are possible with Gasport GG Knife Gate or guillotine damper 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.





Electric Bernard

Electric Bernard

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Electric AUMA





Main features

Extreme working temperatures up to 1000ºC.

Working pressures up to 0.5bar.

Sizes up to DN2000 or 2000x2000mm section.

Bonnet included to avoid gas leaking to the atmosphere.

Rising or non-rising stem design.

Inspection cover may be included for maintenance purposes.

Robust and reliable design.

Tailor-made solutions can be designed by our engineering team.

On/Off service.

Flange drillings according to main international standards or customer specifications.

Different End connection types can be selected as wafer or butt welding ends.

Good quality epoxy coating for carbon steel components.

ISO 5210 flange drillings for interchangeable actuator connections.

AIR SEALING option can be done to provide a 100% tightness of the damper

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 Biogas to Petrochemical applications, we’re confident the PARAVALVES Gasport Series Damper 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.