Products

RITO Hydraulic Regulator with Solenoid 256-0077 Pressure Control Valve 320D 320DL 330D Hydraulic Pressure Regulator Valve

Experiencing sudden hydraulic lag and operational pressure drops in your mining fleet? Faulty pump regulators stall high-tonnage excavators, causing costly project delays and missed deadlines. Install the heavy-duty RITO 256-0077 to immediately stabilize oil delivery and secure predictable fleet performance.

  • Item NO.:

    256-0077
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Eliminate erratic hydraulic flow and maximize tons-per-hour output in severe quarry operations. Our OEM-spec RITO 256-0077 empowers global industrial distributors and mine procurement managers to lower total cost of ownership through high-precision, zero-drift pressure calibration.

256-0077 Regulator

 
Product Specifications

Part Number  256-0077
Part Name Hydraulic Regulator with Solenoid Pressure Control Valve
Compatible Brand Tongmyung
Applicable Models 320D, 320DL, 330D Excavators
Application Excavator hydraulic system
Material High-Hardness Alloy Steel
Product Color Silver and Metallic Grey
Working Temperature -30°C to 120°C
Key Function Regulating main hydraulic pump output pressure
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Proportional Solenoid Accuracy

Deliver smooth mechanical response and fluid metering under intense heavy-duty cycles.

Leak-Free

Anti-Corrosive Valve Core

Utilize hardened alloy coatings to prevent premature spool wear from contaminated fluid.

Direct Fitment

Standardized Port Alignment

Minimize field modification needs with a precise layout designed for immediate mounting.

Rigorous Testing

 Multi-Tier Quality Options

We provide Original, OEM, and Premium Aftermarket grades, allowing distributors to meet diverse client budgets and performance needs.

 

Excavator Hydraulic Part

FAQ


Q: Fault Diagnosis: How can mine technicians identify a failing 256-0077 regulator valve?
A: Look out for engine stalling under hydraulic load, sluggish boom speed, and localized overheating around the pump housing. Replacing the regulator stops internal oil bypassing and restores smooth control cycles.
 
Q: Installation Standards: What strict practices are needed when installing this valve?
A: Completely drain and flush the pump system to remove micro-particles. Clean the mounting face thoroughly, pre-lubricate the new seals with clean oil, and torque bolts evenly to prevent casing stress.
 
Q: Procurement Verification: How do wholesale procurement agents verify machine compatibility?
A: Check that your machine matches the 320D or 330D series and confirm your main pump matches part number 256-0077 to guarantee an exact dimensional and functional fit.
 
Q: Extreme Environment Performance: How does this control valve withstand continuous mining stress?
A: High-grade return springs and heavy-duty seals maintain operational integrity up to 120°C, stopping fluid thinning issues and ensuring stable pressure management throughout extended excavation shifts.
 

Q:  What quality options are available?

A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.

 

Q:Why Choose RITO?
A:Listed Factory
   Stable&Reliable Quality
   OEM Factory for Chinese Top Excavator Brands
   Supplier to Fortune 500 Companies

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Leave A Message

Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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