HIGH-PRESSURE HYDRAULIC AND PNEUMATIC FLUID POWER SYSTEMS
Bifold (Rotork Fluid Systems) Industrial Valves and Systems
We supply advanced severe-service hydraulic and pneumatic fluid control solutions, explosion-proof solenoid valves, and integrated actuation systems manufactured by British leader Bifold (part of Rotork Group). Offering direct sourcing of 316L stainless steel process valves, custom engineering of Hydraulic Power Units (HPU), and genuine certified overhaul seal kits.
Select a product category across Bifold directional control valves, pumps, or control panels. You can attach process medium details, operating pressure parameters, explosion-proof classifications, and metallurgy requirements.
Bifold FP01 and FP02 Series Solenoid Directional Control Valves
Bifold FP01 and FP02 series direct and pilot operated solenoid valves are engineered for severe-service hydraulic and pneumatic high-pressure systems up to 690 bar (10,000 psi).
Body and wet parts are precision-machined from 316L stainless steel for superior resistance to sour hydrocarbons, methanol injection, and aggressive chemicals.
Available in 2/2, 3/2, and 5/2 porting configurations with ATEX, IECEx, and CSA explosion-proof solenoids, certified up to SIL 3 safety integrity levels under IEC 61508.
Selection inputs: operating pressure (bar), porting (2/2, 3/2 NC/NO), coil voltage (24VDC, 110/230VAC), Ex d / Ex ia hazardous classification.
Bifold FP06 Series Hydraulic Directional Valves & ESD/HIPPS Systems
High-flow Bifold FP06 series hydraulic directional control valves are engineered for critical safety-instrumented valve actuation. The two-stage design with an FP01 pilot stage delivers rapid, dependable switching of high fluid flow rates under operating pressures up to 690 bar.
Equipped with manual overrides and positive visual position indicators, FP06 valves serve as core components in Emergency Shutdown (ESD) and High-Integrity Pressure Protection Systems (HIPPS) requiring sub-second closure times.
The Bifold pneumatic product portfolio encompasses direct and air-piloted directional valves rated up to 10–12 bar, explosion-proof electro-pneumatic smart positioners, and current-to-pressure (I/P) converters transforming 4–20 mA loop signals into proportional pneumatic output.
Manufactured with heavy-duty 316L stainless steel enclosures, these devices withstand aggressive offshore marine atmospheres and H2S exposure, ensuring precision throttling of process control valves.
Selection inputs: air supply pressure, control signal range, pneumatic port threading (NPT, BSP), actuator single/double acting type.
Bifold FPS Series Subsea Directional Control Valves (API 17F / ISO 13628-6)
Bifold FPS series deepwater subsea control valves are purpose-built for deployment in Subsea Distribution Units (SDU), Subsea Xmas Trees, and subsea safety shutdown manifolds at ocean depths exceeding 3,000 meters.
Rated for external hydrostatic pressures up to 300 bar and internal operating pressures up to 690–1,035 bar, these valves feature fully pressure-balanced poppet and shear-seal mechanics, ensuring flawless actuation and a certified 25-year maintenance-free subsea design life.
Selection inputs: water depth rating, working pressure, API 17F / ISO 13628-6 class, ROV handle or stab-plate interface.
Bifold Hydraulic Power Units (HPU) & Valve Control Panels (VCP)
Bifold engineers and supplies turnkey modular Hydraulic Power Units (HPU) and Wellhead/Valve Control Panels (VCP/WHCP) for offshore drilling rigs, FPSO vessels, and onshore gas transmission facilities.
Systems integrate redundant pump assemblies, high-pressure bladder/piston accumulators, duplex filtration modules with delta-P sensors, and manifold blocks fitted with FP01/FP06 valves.
All tubing and instrumentation are crafted from 316L or super duplex stainless steel with seamless DCS integration via Modbus and HART.
Selection inputs: number of actuated control wells, accumulator volume, system pressure rating, NORSOK/ATEX/TR-CU compliance.
Bifold FP03 & FP08 Hydraulic Pumps and Pressure Intensifiers
Bifold FP03 and FP08 series hydraulic pumps and pressure intensifiers multiply standard hydraulic supply pressures (100–210 bar) into ultra-high output pressures up to 1,380 bar (20,000 psi) without external electrical power.
Utilizing fluid differential piston area dynamics, these compact boosters generate high holding forces for downhole Surface Controlled Subsurface Safety Valves (SCSSV) and subsea hydraulic interlocks with extreme reliability and space efficiency.
Selection inputs: intensification ratio (1:3, 1:5, 1:10), inlet driving pressure, required output volume, working fluid.
Bifold instrument and piping valve ranges include precision ball valves, needle valves, check valves, and relief valves with connections from 1/4" to 2" NPT or medium/high pressure cone-and-thread connections rated up to 1,380 bar.
For transmitter interfacing, Bifold supplies 2-valve, 3-valve, and 5-valve direct-mount manifolds in 316L stainless steel, Monel, and Inconel 625 alloys, engineered for leak-tight isolation in harsh hydrocarbon extraction.
Selection inputs: valve type (ball, needle, manifold), port size, pressure rating, body metallurgy (316L, Inconel).
Genuine Bifold Seal Kits, Solenoid Coils & Overhaul Spare Parts
To safeguard industrial operations, we deliver genuine Bifold seal overhaul kits (FKM, NBR, FFKM Kalrez, EPDM elastomers), replacement explosion-proof Ex d/Ex ia solenoid coils, pilot cartridge modules, return springs, and precision valve seats.
Every spare part package includes manufacturer inspection records and EN 10204 3.1 material test certificates, restoring factory-rated performance across FP01, FP02, FP06, and FPS subsea valve assemblies.
Selection inputs: complete valve nameplate model code, serial number, medium chemistry, and temperature limits.
Technical Inputs for Bifold Equipment Sizing & Selection
Process fluid characteristics (crude, sour gas, methanol, hydraulic mineral oil, subsea ocean water), design and maximum operating pressures (up to 1,380 bar), ambient and media temperature ranges, actuation method (solenoid, pneumatic, hydraulic), coil electrical ratings, and required SIL safety integrity levels.
Genuine Bifold Replacement Parts & Maintenance Seal Overhaul Kits
We supply genuine Bifold Seal Kits (FKM, NBR, FFKM Kalrez elastomers), explosion-proof Ex d / Ex ia replacement coils, spool cartridges, precision springs, and valve seats matched to factory serial numbers.
4404) stainless steel, ensuring maximum resistance to pitting, crevice corrosion, and chloride stress cracking in harsh offshore marine environments and sour hydrocarbon duty compliant with NACE MR0175 / ISO 15156. 1 traceability.
Operational Dynamics of FP01 & FP02 Direct and Pilot Solenoid Valves
Bifold FP01 and FP02 series solenoid valves feature either direct-acting or servo-assisted pilot poppet architectures.
Direct-acting configurations utilize high-power magnetic force to overcome internal return springs and fluid forces, ensuring instantaneous bubble-tight shutoff across 0 to 690 bar differential pressures.
Pilot-operated models utilize a low-power pilot stage to actuate a larger main spool, enabling high Cv flow ratings. The ultra-low power SLP coil series (from 3 Watts) enables direct integration into solar-powered remote telemetry systems.
Integration of FP06 Hydraulic Valves into Safety-Instrumented ESD and HIPPS
Emergency Shutdown (ESD) and High-Integrity Pressure Protection Systems (HIPPS) require rapid, fail-safe valve response under critical plant upsets. 8 Cv) with sub-500 millisecond stroke times.
Configured in de-energize-to-trip fail-safe architectures, these assemblies automatically dump actuator pressure back into reservoir headers during electrical blackout or safety trips, driving critical isolation valves into safe containment.
Deepwater Subsea Qualification Standards (API 17F / ISO 13628-6)
Bifold FPS series subsea control valves are fully qualified in accordance with API 17F (Subsea Production Control Systems) and ISO 13628-6 deepwater specifications.
Featuring integrated hydrostatic pressure compensation chambers, the valves operate unaffected by 3,000-meter ocean depths and 300 bar external hydrostatic head. Ceramic-on-metal seating eliminates internal fluid leakage over 10,000 continuous operating cycles without diver intervention.
Operating Mechanism of FP03 & FP08 Pressure Intensifiers & Pumps
Bifold pressure intensifiers transform low-pressure hydraulic or pneumatic motive supplies (100–200 bar) into ultra-high output pressures (up to 1,380 bar / 20,000 psi) using differential area reciprocating pistons.
The ratio between large low-pressure drive area and small high-pressure pumping area determines total boost ratios (1:3 to 1:10). Internal automatic reversing spools ensure smooth continuous high-pressure delivery for hydrostatic testing and subsurface safety valve holding.
Hazardous Area Explosion-Proof Approvals: ATEX, IECEx & Global Standards
For dependable operation in Zone 1 and Zone 2 hazardous gas and dust environments, Bifold electro-mechanical products are certified under ATEX Directive 2014/34/EU and IECEx global certification schemes. T4, intrinsic safety Ex ia IIC T6, and dust ignition protection Ex tb IIIC.
Functional safety documentation provides validated PFDavg data supporting SIL 3 safety loops under IEC 61508.
Preventive Maintenance Protocols and Genuine Seal Kit Overhauls
To preserve field reliability, manufacturer operating guidelines recommend scheduled elastomeric seal replacement every 3 to 5 years or upon reaching specified cycle counts.
Genuine Bifold Seal Kits include matched fluorocarbon (FKM), nitrile (NBR), or perfluoroelastomer (FFKM Kalrez) O-rings, virgin PTFE backup rings, guidance bushings, and stainless return springs. Installing genuine overhaul components restores factory-certified seating tightness.
Submit Technical Specification for Bifold System Quotation
Upload your project bill of materials, P&ID schematics, or equipment lists along with your company contact information. Our technical engineering team will review valve sizing, seal chemistry, and logistics schedules in a consolidated proposal.
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