Product families

Products

Welded valve configurations for different operating duties

The JNS range covers five welded butterfly valve series and more than thirty catalogue and project models - from concentric ventilation valves to double and triple offset designs, airtight isolation valves and a drawing-based custom program.

Filter the catalogue below by series, or start from the series overview. Final materials, sealing, connections and actuation are always confirmed against the submitted operating conditions and drawings.

The five JNS series

Every valve starts from the project duty - review the series overview below and confirm the configuration with our engineering team.

VDF-25C

Welded Concentric Ventilation Butterfly Valve

VDF-25D

Double Offset High-Performance Welded Butterfly Valve

VDF-25T

Triple Offset Precision Welded Butterfly Valve

VDF-25B

Central Airtight Valve

Custom pneumatic butterfly valve reference CAD rendering

VDF-25CS

Custom Welded Butterfly Valve

Full product catalogue

Filter the range by series - every model is confirmed against the project duty and drawings before production.

Series by typical duty

A compact comparison between geometry, duty and configuration approach.

Series	Geometry	Typical duty	Configuration approach
VDF-25C	Concentric	Ventilation, flue gas and dust collection	Catalogue range with project review
VDF-25D	Double offset	Frequent cycling and automated control	Sealing and actuation by duty
VDF-25T	Triple offset	Tight shutoff, elevated temperature or abrasive service	Sealing configuration by project
VDF-25B	Airtight isolation	Marine ventilation, compartment isolation and FGD ducts	Drawing-based project configuration
VDF-25CS	Custom welded valve	Non-standard dimensions and interfaces	Customer drawings and engineering review

Beyond the standard range

Non-standard project? Start with the drawings

When dimensions, connections, materials or actuator interfaces go beyond the catalogue scope, the VDF-25CS program covers drawing-based custom welded valves - from operating conditions to confirmed project drawings.

Explore Custom Solutions

Confirm the configuration with our engineering team

Share the operating conditions, duct data and available drawings. We review the duty and propose a suitable series and configuration - no obligation.

Request a Quotation