⚙️ Basic Specifications

Product Model: D663-4781

Product Type: Two-stage servo valve with integrated digital controller

Pilot Stage Technology: Deflector Jet or Dual Nozzle Baffle Valve

Rated Flow: Approx. 160 L/min (at a valve pressure drop of 70 bar)

Feedback Method: Main valve spool position feedback (LVDT)

📈 Pressure and Performance Parameters

Operating Pressure:
Ports P, A, B: Maximum 315 bar (31.5 MPa)
Port T: Maximum 35 bar

Dynamic Response:

Frequency Response (-3dB): ≥ 50 Hz

Step Response Time: ≤ 30 ms

Hysteresis: < 0.5%

Resolution: < 0.1%

Null Leakage: Approx. 5.0 L/min (at 210 bar)

Why Choose Us?

With years of expertise in the industrial automation sector, we are dedicated to providing our customers with high-quality components and unparalleled service. Here are five key reasons why clients worldwide trust us as their preferred partner:
1. Global Shipping

We have built a robust and efficient logistics network that spans the globe. No matter where your project is located, we ensure timely and secure delivery through our partnerships with leading international carriers, bringing the world’s best automation technology right to your doorstep.

2. Fast Response

In the fast-paced world of industrial production, time is money. Our dedicated support team is committed to a “Rapid Response” policy, providing quick quotes, technical consultations, and order updates within the shortest possible timeframe to keep your operations running smoothly.

3. Large Inventory

We maintain a massive, ready-to-ship inventory of components from top-tier brands like ABB, Siemens, Schneider, and more. Our extensive stock levels mean you don’t have to endure long manufacturer lead times, allowing for immediate dispatch and faster project completion.

4. Perfect After-Sales Service

Our relationship with customers doesn’t end at delivery. We provide a comprehensive after-sales support system, including technical troubleshooting, warranty protection, and hassle-free return policies. We stand behind every product we sell to ensure your complete peace of mind.

5. Low Complaint Rate

Quality is our lifeline. Through rigorous supplier screening and strict pre-shipment inspections, we maintain an exceptionally low complaint rate. Our track record of reliability and high customer satisfaction is a testament to our commitment to excellence and professional integrity.

Warranty&Reture Policy:

1、One year warranty is offered for this product. If the product malfunctioned under proper usage per instructions manual within the warranty period, please contact us to obtain shipping instructions and send it back at your shipping costs.

2、14days evaluation and investigation takes placed after receiving yourreturn item.

3、A brand new replacement unit will be sent to you at our shipping costs if it meets our warranty requirements.

1. Please confirm the final price and inventory with customer service before placing an order.
2. We also provide Amazon, Ebay, Shopee, Ozon, Mercado Libre and other shopping platforms for transactions. Please contact our customer service if necessary. (These online shopping malls have a limited number of shelves, and the product you need may not be included. We can generate a separate link for you）
3. We can provide multiple options for some products (original brand new, refurbished, used, Equivalent substitutes, etc.). Please contact our Customer Service for more information.
Customer Service Manager WHATSAPP: +8615016276679（Click the button on the upper left corner of the website to contact）
Customer Service Manager Email: zengduff@marginalhyd.com