Embedded Files
D771X Modular Butterfly Valve Platform with Hydraulic Actuators
The D771X Series is a hydraulic wafer type centerline rubber-seated butterfly valve platform. The base model code D771X follows the GB/T 32808-2016 valve model designation standard:
D: Butterfly valve
7: Hydraulic drive
7: Wafer type connection
1: Centerline structure
X: Rubber sealing
INJOY configuration suffixes:
D771X-T: D771X valve with T Series hydraulic actuator for 5m shipboard service
D771X-S: D771X valve with S Series hydraulic actuator for 50m submerged service
D771X-D: D771X valve with D Series hydraulic actuator for 330m subsea service
Whether for space-constrained engine rooms or high-pressure subsea manifolds, the D771X ensures precision control and long-term durability.
Model Code: D771X
Model Designation: Based on GB/T 32808-2016
Structure: Centerline rubber-seated design
Drive Type: Hydraulic drive
Connection: Wafer type
Sealing: Rubber seat
Body: EN-GJS400-15 ductile iron, optional C95800
Stem: SS420
Disc: C95800, optional 2507
Seat: EPDM, optional NBR / FKM
Coating: ISO 12944 C4-M / C5-M marine coating
Sizes: DN50–DN600
Pressure Rating: PN10 / PN16
Flange Standard: EN 1092-1
Actuator Options: T Series, S Series or D Series
Oil Viscosity: 15–46 cSt at 40°C
D771X-T: Rapid Response. C4-M coating. Optimized for symmetric torque and engine room efficiency.
D771X-S: Fail-Safe Security. C5-M Coating. 50m Depth Rated for ballast tank automation.
For ultra-high pressure or special subsea requirements (330m+), please contact our technical team for custom D-series solutions.
Optional PFB Feedback Module
Each D771X hydraulic butterfly valve assembly can be equipped with a PFB position feedback box, providing 0–100% real-time valve position confirmation for bridge, engine room or PLC-based valve remote control systems. Native integration helps the valve, hydraulic actuator and feedback box operate as a coordinated package.
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.
Report abuse