20A-04B Ball valve Check Valve
Product Features
1. Hardened seat for long life and low leakage.
2. Optional bias springs for back-pressure application flexibility.
3. Fully guided check assembly.
4. Miniature size.
5. Fast closing and seating.
Product Specifications
| Product Model | 20A-04B BALL VALVE, CHECK VALVE (DOWN-HOLE TYPE) |
| Operating Pressure | 240 bar (3500 psi) |
| Flow | See Performance Chart |
| Internal Leakage | 0.10 ml/min. (2 drops/minute) max. at 210 bar (3000 psi) |
| Crack Pressure Defined | Gauge bar (psi) evident at ① at 16.4 ml/min. (1 cu. in./minute) attained |
| Standard Bias Springs at Crack | 0.34 bar ( 5 psi) |
| 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: 0.05 kg. (0.12 lbs.); Steel with hardened work surfaces.Zinc-plated exposed surfaces.Seal: Buna-N O-rings and back-up rings (standard). |
Product Operation Symbol
The 20A-04B allow flow passage from ① to ②, while normally blocking oil flow in the opposite direction. The cartridge has a fully guided check which is spring-biased closed until sufficient pressure is applied at ① to open ②.
Performance/Dimension
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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.
