Servo Valves for Large Molding Presses
Large molding presses use a lot of hydraulic power every single cycle. The valve you choose is important, as it directly impacts press speed, control stability, and operating cost. Domin offers several models for high flow and high force requirements, including large molding presses. This includes flow rates up to 153 gpm (580 lpm) with response time under 6.5 ms (or <7 ms for flow rate up to 66 gpm (250 lpm)).
The Control Challenge in Large Molding Presses
When presses scale in size, hydraulic systems need to deliver more flow at similarly high pressures, while still maintaining precise control for clamp force, platen motion, and switchover. Traditional high-flow valves can be bulky, slow, and unstable, which limits press usage at larger scales. Discover how servo valves control clamp force, plate motion, and switchover in compression molding.
Domin Valves for Large Molding Presses
For large molding presses with flow requirements up to 153 gpm (580 lpm), the Domin S Series provides comparable fast response times and frequency response, so that even large presses can get the quick, stable control that they require for tight dynamic control. For presses that do not require such tight tolerances, the P Series still features high-flow for cycles that are not as demanding. Learn more about servo valves in large plastic and rubber applications.
|
S10 Pro Valve |
S12 Pro Valve |
P10 Pro Valve |
P12 Pro Valve |
|
|
Hysteresis |
<0.2% |
<0.2% |
<0.2% |
<0.2% |
|
Leakage |
<0.8 gpm (<3 lpm) |
<0.4 gpm (<1.8 lpm) |
<0.4 gpm (<1 lpm) |
<0.6 gpm (< 2.5 lpm) |
|
Mass |
8.8 lbs (4 kg) |
1.39 lbs (0.63 kg) |
8.8 lbs (4 kg) |
15.4 lbs (<7 kg) |
|
Frequency Response |
> 120 Hz (-3 dB, up to ±25% FS) |
> 130 Hz (-3 dB, up to ±25% FS) |
> 65 Hz (-3 dB, up to ± 25% FS) |
> 60 Hz (-3 dB, up to ± 25% FS) |
|
Rated Flow |
13 to 66 gpm (50 to 250 lpm) |
66 to 153 gpm (250 to 580 lpm) |
10.6 to 42 gpm (40 to 160 lpm) |
42 to 153 gpm (160 to 580 lpm) |
|
Response Time |
<7 ms |
<10 ms |
<20 ms |
<12 ms |
|
Mounting Pattern |
NG10 |
NG16 |
NG10 |
NG16 |
Our Recommended Valves – S12 Pro
The S12 Pro is our recommendation for large injection molding presses with demanding control requirements. These fit interchangeably on NG16 systems and are built on the proven S6 Pro (the most popular Domin valve) pilot stage. They are highly dynamic for valves of their size.