Rotary Joint for Hydraulic Decoking Systems – High Pressure
Flowserve Hydraulic Decoking Rotary Joint
| Brand: | Flowserve |
|---|---|
| Overview: | The Flowserve heavy-duty rotary joint is engineered for hydraulic decoking systems in Delayed Coking Units (DCU) within refineries and petrochemical plants. Designed to support drill stem drive assemblies, it transmits high-pressure cutting fluid during coke cutting operations while maintaining sealing integrity and rotational stability under extreme suspended loads. This improves operational efficiency, safety and equipment life in automated and semi-automated decoking systems. |
Heavy-Duty Rotary Joint for DCU Drill Stem Drive Systems
The Flowserve Pacific® heavy-duty rotary joint is robustly designed to support the suspended loads experienced in coking units. Its function is to transmit cutting fluid from the stationary hose connection to the drill stem and cutting tool. Flowserve is continually upgrading its rotary joint to accommodate higher cutting pressure requirements.
- Applications: Petroleum Production and Refining, Hydraulic Decoking, DCU Operations
- Industries: Heavy Oil and Upgrading, Delayed Coking, Refinery Process Units
Features and Benefits
- Two flange sizes, available with 125 mm (5 in) 250 PN (1500 lb) or 400 PN (2500 lb) inlet flanges, with optional 150 mm (6 in) Unibolt® or compact flange connections to match the drill stem connector
- Cast single-piece gooseneck eliminates welds and helps reduce corrosion
- Rotary joint drive options
- Air piston motor
- Hydraulic
- E-motor (with VFD)
- Dual Seal
- Increased reliability with a four-year design life
- Switching from the primary seal to the secondary seal supports planned maintenance in the event of seal wear or failure
- Simple installation helps reduce downtime
- Retrofit option for all Flowserve rotary joints
- Rotary joint upgrade options
- Convert packing to seal rings
- Convert vertical air motor to horizontal motor with right angle gear
- Upgrade Unibolt coupling to direct connect with drill stem
- Add second bearing for right angle drive shaft
- Convert to integral gooseneck and support cage
- Add rotary joint stiffeners
Operating Parameters
Two models available:
- Pressures to
- 205 bar (3000 psi)
- 430 bar (6230 psi)
- Speeds of 2 to 17 rpm
- Rotates 30 m (100 ft) to 45 m (140 ft) drill stem lengths
- Carries axial hydraulic loads in the magnitude of 190 000 J (140 000 ft-lb) through its main thrust bearing
- Seals hydraulic pressure against atmosphere
®Unibolt is a registered trademark of Cameron International Corporation
DCU Drill Stem Drive Reliability and Gearbox Protection
In refinery delayed coking operations, drill stem drive DCU systems face high torque, pressure spikes and contamination risks during coke cutting. A reliable hydraulic decoking rotary joint supports stable fluid transfer and sealing performance, helping reduce the likelihood of gearbox contamination and unplanned failures linked to leakage or process upsets. Built for demanding DCU environments, the Flowserve rotary joint supports continuous rotation and maintains operational control for safer, repeatable coke cutting performance.
Remote and Automated Hydraulic Decoking Systems
Hydraulic Decoking System Equipment Bulletin
Decoking System Equipment Innovation Poster
Enable safe, continuous rotation of decoking tools with a high-pressure rotary joint built for demanding DCU refinery environments. Contact us today for specifications and integration support.