Hydraulic Decoking Systems Control Valve

Hydraulic Decoking Systems Control Valve for high-pressure, delayed coking unit operations

Introduction Features Literature

Hydraulic Decoking Systems Control ValveHydraulic Decoking Systems Control Valve

Brand: Flowserve
Description:

The Hydraulic Decoking Systems Control Valve is a critical component used in delayed coking units (DCUs) to safely and efficiently manage the high-pressure, high-temperature flow of cutting water, steam, or coke slurry during the decoking cycle. Designed for extreme service conditions, these valves offer precise modulation, erosion resistance and fail-safe actuation to ensure uninterrupted operation in hydraulic decoking systems.

Engineered for high cycle life and severe duty, the valve features robust trim designs, advanced coatings, and materials compatible with coke fines, flashing fluids, and thermal shock. It is commonly paired with hydraulic actuators and interlock systems for remote and automated control of decoking cutting tools, water jets, or coke drums.

Ideal for refineries, oil sands and petrochemical plants, this control valve ensures safe coke drum operation, minimizes downtime, and protects downstream equipment from thermal and mechanical damage.

The Flowserve decoking control valve controls the flow from the jet pump with a single valve providing three distinct features: recirculation flow control, pre-fill and full flow to the decoking tool nozzles.

Hydraulic Decoking Systems Control Valve Applications

Decoking, Petroleum Production and Refining

  • Industries:
    Heavy Oil and Upgrading, Delayed Coking

Three Distinct Functions

  • Recirculation (bypass) flow control for pump protection
  • Pre-fill of decoking lines, hoses, manifolds, etc., at a predetermined flow rate to prevent water hammer
  • Full flow to the decoking tool nozzles. Very low pressure drop (high Kv [Cv]) in full flow for reduced energy consumption

Features and Benefits

  • Cost-effective solution
  • Design and maintenance simplicity with minimal moving parts
  • No foundation required

Design Features

  • Long Stroke, Single Stem Operation
    • Assures no unwanted overlap of functions
  • Non-Clogging Design
    • Passes particles up to 3 mm (1/8 in)
  • Compact Design
    • Simplifies installation. Suitable for direct mounting on the jet pump
  • Stainless Steel
    • Inlaid at all gasket surfaces, option for fully lined body
  • Valve Stem Sealing
    • Using low friction elastomer rings. No adjustment…no packing required
  • Proven, Replaceable, Durable Soft Seals
    • Assures zero leakage with water and coke fines – no lapping required during repairs
  • Instant Return
    • To any operating mode upon command
  • Actuation
    • Limitorque® motor operator is standard. Optional double-acting pneumatic actuator with positioner is available with 5.5 bar (80 psi) to 7 bar (100 psi) air supply requirement
  • Decoking Valve Upgrade Options
    • A Flowserve decoking expert can help specify appropriate materials and design enhancements, controls and instrumentation for specific service requirements