34BQK-E20L proportional air-controlled directional valve
1. Relief pressure: 25 MPa.
2. Diameter: 20mm.
3. Rated flow rate: 220L/min.
3. Control air pressure: 0.6-1 MPa.
Description
This proportional air-controlled directional valve is used in medium and large dump trucks, featuring lifting, mid-stop, and...
Proportional slow-down function, adjustable descent speed, typically installed in the hydraulic oil.
The valve seat on the box features reliable structural strength, sensitive switching, and a long service life.
Note: The thread of the oil pipe connector and the overflow pressure can be customized according to customer requirements.
Technical Specifications
Item |
Specification |
|---|---|
Relief Pressure |
25 MPa |
Diameter |
20mm |
Rated Flow Rate |
220L/min |
Control Air Pressure |
0.6-1 MPa |
Operating Temperature |
-20 to +80 ℃ |
Working Medium |
Anti-wear Mineral Oil |
Filtration Precision |
≤25μm (ISO18/13) |
Valve Body Appearance |
Black |




Product Features
Suitable for controlling front-top multi-stage cylinders, it can be installed with the lower-mounted oil return port T1 on the oil tank valve seat for direct oil return. You can also choose the side-mounted oil return port T2, which uses a tube-type oil return system. Remote air pressure control for the lifting, lowering, and proportional slow lowering functions of the cabin. Equipped with a pilot-operated relief valve and a one-way oil inlet valve, allowing for system pressure setting.




About Us

Hebei Huachun Hydraulic Automobile Fittings Co., Ltd. is a professional manufacturer of hydraulic accessories for dump trucks, Since its establishment in 1996, it has been committed to the development and production of hydraulic accessories for dump truck, developed hydraulic valves, hydraulic oil tanks and other products.According to market demand, the designed special hydraulic valve meets the requirements of descent speed, self-unloading with canopy, self-unloading with hydraulic outriggers, mid-point self-unloading, rollover and displacement,we have also developed aluminum hydraulic oil tanks to meet the requirements for light weight.
The company has more than 60 kinds of special products and has obtained more than 40 national patents.The product is suitable for refitting heavy duty, medium duty and light duty dump truck,It has the advantages of safety, reliability, flexible operation, convenient installation and long service life.The products meet the special requirements of domestic working conditions,It has been designated as an accessory product by major domestic modification group.
In 2016, the company was recognized as a "National Intellectual Property Advantage Enterprise" by the State Intellectual Property Office,It has been rated as "High-tech Enterprise" in Hebei Province for three consecutive years. On September 18, 2016, it was rated as "China's Well-known Trademark" by the State Administration for Industry and Commerce Trademark. The company's quality management system complies with TS16949: 2016 automotive industry technical specifications. Since its certification in 2007, the quality system has been operating well.
The company always adheres to the quality policy of "quality first, customer first, pursuit of better, and striving for first-class", and abides by the quality tenet of "reliable quality, reasonable price, timely supply, and thoughtful service" to provide better products for the market. Create greater value for customers and create more wealth for society.

Main product categories of the company

FAQ
Q: Are you trading company or manufacturer ?
A: We are factory. We have cooperated with dozens of countries and regions. We have rich experience in foreign trade.
Q: Is customization supported?
A: Support customization, you want we have, welcome to consult.
Q:Can you make parts as customer's requirement or drawing?
A: Yes, we can OEM for you as your drawings. Our engineer also can give you professional support for technical suggestions.
Q: How to confirm the payment?
A: We accept payment by T/T, PayPal, the other payment ways also could be accepted, Please contact us before youpay by the otherways.
Q:What is your warranty policy?
A: All our products are warranted for one full year from date of delivery, we have a professional service team to provide you with perfect after-sales service.