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Control Valves

Axial Control Valve - RZD-R

Mokveld Valves BV

  • Axial flow design
  • Streamlined flow path through full-port expanded body
  • Unique TVM (Total Velocity Management®) concept
  • High capacity
  • Accurate control with pressure balanced trim
  • High turndown
  • Silent operation (minimized dynamic body noise)
  • Compact one-piece valve body (20%–70% weight reduction vs globe valves)

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Description Vendor

The Axial Control Valve is designed for demanding applications with a streamlined flow path that minimizes turbulence, erosion, and vibration. It offers high capacity, accurate control, and is suitable for severe-duty applications such as anti-surge, anti-cavitation, and special control. Features include a unique TVM concept for managing fluid velocity, compact design, and compatibility with various actuators. It is ideal for applications requiring high turndown and efficient process control.

Use Cases

  • Special control
  • Severe-duty (axial choke valve)
  • Anti-surge / recycle control
  • Anti-cavitation / Joule-Thomson

Capabilities

  • Available in sizes 2”–72”.
  • Rated ASME Class 150–2500 or API 3000–10 000.
  • Suitable for severe choke applications with Tungsten Carbide trim.
  • Optional low fugitive emission (ISO 15848-1 Tightness class B).
  • Fire safe design.
  • Compatible with pneumatic, hydraulic, electric and electrohydraulic actuators.
  • Custom-designed valve, trim and actuator per application.
Mokveld Valves BV Mokveld Valves BV, a Dutch global leader in the development and production of high-quality control and safety valves with a distinguished history dating to 1922, has supplied the first valves for hydrogen applications over 30 years ago, with the company's axial control valves, on-off valves, and check valves currently operating in various H2 applications worldwide. Mokveld announced a long-term frame agreement with Gasunie (the Dutch gas network operator) to supply control valves for Hynetwork's Hydrogen Delivery Stations, part of Gasunie's plans to develop a countrywide hydrogen network in the Netherlands converting existing natural gas pipelines to transport hydrogen, with Mokveld's axial control valves (featuring one-piece body design, streamlined flow path, and high capacity) selected for their pressure-balanced trim and full surround flow enabling energy-efficient electric actuator use. The company's Zero Emission Valve (ZEV-R model), designed to eliminate fugitive emissions and hydrogen-ready, represents a world-first innovation alongside axial check valves (TKZ-Y), axial on/off valves (RZD-X), and axial control valves (RZD-R) offering low fugitive emission tightness class B conformance (ISO 15848-1), fire-safe design, and reliable bi-directional bubble-tight shut-off suitable for hydrogen service. As an active member of CEN TC 69 Working Group 19 (developing European standards for valves and hydrogen), and with the majority of Mokveld's delivered valves conforming to NACE MR0175/ISO 15156 (facilitating conversion of existing natural gas valve applications to hydrogen service), Mokveld continues providing expert engineering assistance for both new hydrogen applications and natural-gas-to-hydrogen service conversions, supporting the safe and efficient European hydrogen network transition alongside its established oil and gas, hydropower, water infrastructure, and carbon capture valve technology business.
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