3-way pressure reducing valve 30Bar(1122739 50 AM 11E-30)
Advantage:
The 30 bar setting highlights the thermal and mechanical stability of HAWE valves:
● Energy Efficiency: By dropping the pressure to exactly 30 bar for auxiliary functions, you prevent the heat generation that would occur if you used a simple orifice or throttle to "choke" the high-pressure main line.
● The "3-Way" Safety Net: Just like the 15 bar version, the 3rd port (tank connection) is critical. If your 30 bar cylinder is hit by a shock load, the valve instantly vents to the tank. This prevents the pressure from spiking and blowing seals or damaging the mechanical linkage.
● High Precision/Low Hysteresis: HAWE’s hardened steel spools are ground to extremely tight tolerances. This means the transition between "reducing" (P to A) and "relieving" (A to T) is nearly seamless, which is vital for smooth tensioning applications.
● Vibration Resistance: HAWE valves are known for being "dead-beat"—they don't hunt or oscillate, even when the main pump is a piston pump creating pressure ripples.
Application:
While 15 bar is often used for "soft" control, 30 bar is a "workhorse" pressure for several industrial and mobile functions:
● Clutch and Brake Actuation: Many industrial power-shift transmissions or heavy-duty winches use a constant 30 bar supply to engage or disengage wet clutches and spring-applied brakes.
● Active Tensioning: Used in paper mills, textile machines, or cable-winding systems to maintain a constant 30 bar on a cylinder that keeps material under tension.
● Positioning Cylinders: Operating small auxiliary cylinders that require more "bite" than a 15 bar pilot system can provide, but where the full 200+ bar system pressure would cause mechanical damage.
● High-Flow Pilot Supply: Large proportional valves (like the HAWE PSV series) often require a slightly higher pilot pressure (around 30 bar) to overcome internal spring forces when shifting heavy spools under high flow conditions.
● Cooling Fan Drives: Regulating the supply to hydraulic fan motors in mobile machinery to maintain a specific speed.
Technical Comparison: 15 Bar vs. 30 Bar
|
Feature |
15 Bar Application |
30 Bar Application |
|
Typical Role |
Signal / Control |
Actuation / Tensioning |
|
Load Sensitivity |
Very sensitive (low force) |
Moderate (capable of moving loads) |
|
Heat Dissipation |
Negligible |
Moderate (requires 3rd port flow) |
|
HAWE Series |
ADM 1, ADM 2 |
ADM 2, VDM 3 |
DRAWING:
WHY CHOOSE US
EXPERIENCED
QUALITY
R&D
We have more than 15 years of experience in this item.
Introduce well-known brand processing equipment and provide QC reports.
Our R&D team consists of 10-20 people, most of whom have about 10 years of work experience.
OUR CERTIFICATES
Quality Control Equipment
To ensure the quality of factory products,we introduce advanced cleaning and component testing instruments, 100% of the assembled products pass factory testing and the test data of each product is saved on a computer server.
R&D team
Our R&D team consists of 10-20 people, most of whom have about 10 years of work experience.
Our R&D center has a sound R&D process，including customer survey, competitor research, and market development management system.
We have mature R&D equipment including design calculations, host system simulation, hydraulic system simulation, on-site debugging, product testing center, and structural finite element analysis.
OUR PARTNER
Over the past decade,as a trusted supplier, Ningbo Flag Hydraulic Co., Ltd. provides supporting equipment for large and powerful domestic enterprises such as Sunward Intelligent, XCMG, Sany Heavy Industry, and Zoomlion.
-
83010095-30bar -for customer
