30AY-08 Hydraulic control check valve
Product Features
1. Hardened seat for long life and low leakage.
2. Optional sealed piston.
3. Optional spring ranges.
4. Compact size.
Product Specifications
| Product Model | 30AY-08 Hydraulic control check valve |
| Operating Pressure | 240 bar (3500 psi) |
| Flow | See Performance Chart |
| Internal Leakage 240 bar (3500 psi) | ③ to ② : 0.25 ml/min. max (2 drops/minute) ② to ① without sealed piston: 115 ml/min. max (7 cu. in./minute) ② to ① with sealed piston: Zero leakage |
| Pilot Ratio | 3 : 1 |
| Check Spring Bias | 1.72 bar (25 psi), Standard |
| With Sealed Piston Option | 6.2 bar (90 psi) minimum |
| Temperature | -40°℃～120°C |
| Fluids | Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 ssu).Installation:No restrictions |
| Cartridge | Weight: 0.08kg. (0.18 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces. Seal: D type seal ring. |
| Standard Ported Body | Weight: 0.27 kg. (0.60 lbs.); Anodized highstrength 6061 T6 aluminum alloy, rated to 240 bar (3500 psi). Ductile iron and steel bodies available; dimensions may differ. |
Product Operation Symbol
The 30AY-08 allows flow from ②to ③, while normally blocking flow from ③ to②. The flflow will be allowed from ③ to ② when sufficient pressure is applied at ①. The cartridge has a 3:1 pilot ratio, meaning that at least one-third of the load pressure held at ③ is required at ① to open the valve. The check is spring-biased to assure holding in static or no-load conditions. A sealed pilot piston option is available.
Performance/Dimension
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