The preeminent Severe Service Knife Gate Valves (SSKGVs), made entirely in North America.

Designed for Severe Service

As industrial processes continue to increase in complexity and risk, valve design and performance is crucial to maintaining consistent plant operation and maintaining your bottom line. Valves are critical to protecting your workers and the environment; they need to be reliable in the harshest of conditions.

DSS Valves is known for creating dependable Severe Service Valves that outlast the competition in any scenario. Just because they’re built to thrive in the most severe conditions, doesn’t mean they shouldn’t be considered for more general applications. Investing in a premium product pays dividends through increased service life and reduced downtime, making the overall cost of ownership much less in the long run.


Advanced Features

Premium Components Come Standard

For starters, all DSS Valves meet or exceed MSS SP-135, and include the following features:

• Wider gates, internal guides, and full bore matching standard pipe sizes
• Energized resilient perimeters with hybrid resilient/metallic seats
• Fully indexable Ni-hard wear rings
• Wider and thicker primary and secondary transverse seals that provide better sealing at higher pressures.
• Dual transverse seals and secondary body seals for 4″ bore sizes and larger
• Thicker primary body seal (10mm for ≥8” bore sizes, 6mm for ≤6” bore sizes)
• Stainless steel screws for dust covers
• Four bolt yokes for valves with 6″ bore size and larger
• Fully supported flanges eliminates the need for pipe nipples on DBB valves
• SAE 660 bronze ACME nuts for smoother operation
• Larger ACME screws for ≥26″ bore sizes
• 17-4ph cylinder clevis pins that are stronger and corrosion resistant


Based out of Niles, MI, DSS Valves is a team of engineering and manufacturing professionals with decades of experience in the creating premier Severe Service Knife Gate Valves for Oil & Gas, Mining, Steel, Pulp & Paper, and Water/Wastewater industries. They specialize in creating valves that thrive in the harshest environments and their products are known for handling differential pressure scenarios, corrosive materials, extreme temperatures and detrimental solids. Visit  to learn more about DSS Valves.

Contact Us

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558 East Kent Avenue South
Vancouver, British Columbia
Canada V5X4V6
Phone: 604.263.1671
Fax: 604.263.0947