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Q741F: Integrated Marine and off-shore Hydraulic Ball Valve
High-Pressure Precision for Shipboard and 50m Submerged Isolation
The Q741F Series is a hydraulic actuated flanged PTFE-seated ball valve platform with a straight-through flow channel. The base model code Q741F follows the GB/T 32808-2016 valve model designation standard:
Q: Ball valve
7: Hydraulic drive
4: Flanged connection
1: Straight-through flow channel
F: PTFE seat
INJOY configuration suffixes:
Q741F-T: Q741F valve with T Series hydraulic actuator for 5m shipboard service
Q741F-S: Q741F valve with S Series hydraulic actuator for 50m submerged service
This integrated approach eliminates the risks of third-party assembly, ensuring perfect stem alignment, optimized torque delivery, and synchronized sealing for the most critical isolation tasks in marine and offshore environments.
Note: Q741F uses a PTFE seat and floating ball structure, which is generally not recommended for service depths beyond 50m. For deeper subsea isolation requirements, DBB ball valve configurations or other deep-water valve structures are typically preferred. Please contact INJOY for application-specific deep-water valve selection.
Model Code: Q741F
Model Designation: Based on GB/T 32808-2016
Flow Channel: Straight-through
Drive Type: Hydraulic drive
Connection: Flanged
Body: CF3M / 316L stainless steel
Stem / Ball: SS316L
Seat / Packing: PTFE
Sizes: DN15–DN200
Pressure Rating: PN16–PN40, Class 150 / 300, JIS 10K
Flange Options: HG/T 20592, ASME B16.5 RF, EN 1092-1, JIS B2220
Working Temperature: -20°C to +80°C
Actuator Options: T Series or S Series
Actuator Standard: BS EN 15714-4, IP68
Oil Viscosity: 15–46 cSt at 40°C
Recommended Depth: Up to 50m submerged service
Q741F-T
Hydraulic flanged straight-through ball valve with T Series hydraulic actuator for 5m shipboard service.
Engine rooms, deck service, BWTS and compact marine isolation applications.
Rapid 0.5s–1.0s operation | C4-M marine coating | Optional PFB position feedback box
Q741F-S
Hydraulic flanged straight-through ball valve with S Series hydraulic actuator for 50m submerged service.
Ballast tanks, submerged valve areas, SWRO and seawater isolation service.
50m depth rating | C5-M marine coating | Optional PFB position feedback box
Q741F-T: Symmetric torque for engine rooms.
Q741F-T: Shipboard & Deck Service
Hydraulic Actuator: T-Series
Depth: Submersible (Shallow Water)
Response: Rapid 0.5s – 1.0s operation.
Best For: Engine room isolation.
Smart Monitoring: Includes PFB Module (Optional) for real-time status feedback.
Reliability: C4-M marine coating as standard.
Q741F-S: Fail-safe security for 50m depth.
Q741F-S: 50m Submerged Service
Hydraulic Actuator: S-Series
Depth: Rated for 50 meter
Response: Rapid 0.5s – 1.0s operation.
Best For: Submerged ballast tank isolation.
Signal Integrity: Integrated PFB Module (Optional) provides precise tracking under 50m of water.
Reliability: C5-M marine coating as standard.
Optional PFB Feedback Module
Every Q741F configuration can be equipped with our PFB-0420MA module, providing 0-100% real-time remote position confirmation for centralized bridge or engine room control.
Triple-Layer Defense:Proprietary Solid-State Encapsulation and redundant internal sealing; ensures bone-dry operation under extreme hydrostatic pressure and condensation.
German P+F Precision:Integrated with premium Pepperl+Fuchs analog sensors for continuous 4-20mA position visibility.
Heavy-Duty Construction: Cast in C95800 Nickel-Aluminum Bronze with 316L Stainless Steel interfaces; immune to seawater corrosion and biofouling.
Operational Depth: IP68 Rated and system-verified for depths up to 330 Meters / 1,083 Feet (D-Series with Bronze Top Cap). We offer tiered testing for T-Series (5m) and S-Series (50m) to match your specific offshore requirements.
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