1in Auto Load Valve:
High-Flow Capacity
Rated at 48 GPM @ 60 PSI, optimized for stable load control in water-brake dynamometer systems.
Precision-Profiled Control Piston
Specially designed piston geometry provides linear, fine-resolution flow control, enabling:
Smooth load transitions
Accurate torque control
Repeatable engine mapping and calibration
NEMA 23 Stepper Motor Drive
High-torque NEMA 23 stepper motor ensures precise positioning and reliable operation under high water pressure.
Engine Mapping Optimized
Designed specifically for steady-state tuning, part-throttle mapping, and repeatable dyno pulls without load hunting.
CNC-Machined Construction
Precision-machined aluminum body with a brass piston for corrosion resistance, durability, and smooth actuation.
Manual, Open-Loop & Closed-Loop Ready
Compatible with:
Manual control
Open-loop dyno control
Closed-loop autoload systems with RPM or torque feedback
Smooth & Fast Response
Eliminates pressure spikes and water hammer, improving dyno stability at low and high RPM.
Single or Dual Outlet Options
Supports single or dual rotor water-brake configurations.
Serviceable, Dyno-Grade Design
Uses standard seals and grease ports for easy maintenance and long service life.
LeadTime 7 days
Price : 750USD 4% paypal fee
13inch Dual Rotor Best Setup
Dual 1-Inch Auto Load Valve Setup for 13-Inch Dual-Rotor Water Brake
For a dual-rotor 13-inch water brake, using two 1-inch auto load valves in parallel (one per rotor side) provides major advantages in response, control, and reliability compared to a single large valve.
System advantages:
• Minimal response delay
Each rotor side receives water directly through its own valve. This eliminates hydraulic lag from shared manifolds and delivers immediate load changes.
• Instant and balanced pressure on both rotor faces
Independent water supply ensures equal pressure on both sides of the dual rotor, keeping the absorber hydraulically balanced at all RPM and torque levels.
• Smoother and more precise load control
Two smaller valves provide finer flow resolution, resulting in smoother torque application and more accurate engine mapping—especially during transient and sweep testing.
• Improved stability at high RPM and high torque
Separate flow paths reduce pressure fluctuations and oscillations, improving stability during aggressive pulls.
• Redundancy and safety
If one valve ever experiences an issue, the system can still be unloaded safely, protecting the engine and the dyno.
• High-torque NEMA 23 stepper motors (3.0 A)
Each valve is driven by a 3.0-amp NEMA 23 stepper motor, delivering high holding torque and strong low-speed control. This results in virtually no missed steps, even under rapid load changes and high water pressure.
• Plug-and-play wiring for DynoMax controllers
The wiring is fully plug and play with DynoMax. Both load valves are connected and controlled in parallel, receiving identical step and direction signals, ensuring perfect synchronization with no drift between valves.
• Perfect parallel operation
Both valves open and close together at the same rate, keeping water flow balanced across both rotor faces at all times—no calibration mismatch or timing delay.
Bottom line:
Two 1-inch auto load valves with 3.0 A NEMA 23 steppers, wired plug-and-play to DynoMax and operating in perfect parallel sync, provide faster response, better balance, smoother control, and maximum reliability for high-power 13-inch dual-rotor water brake systems.
