AJ-H20B Check Valve
Introduction
A one-way valve, or a check valve, used in hydraulic systems to ensure that oil can only flow in one direction and cut off in the other direction.
There are two types of opening pressures: 0.04MPa and 0.4MPa. The former is generally used in pressure pipelines to prevent reverse oil flow; The latter can generally be used as a back pressure valve.
The inlet and outlet of the plate type one-way valve are on the same bottom plane, and the valve plate is connected to the system pipeline.
Usage conditions:
Medium: mineral oil; Aqueous working fluid
Medium temperature range: mineral oil: -20 ℃~70 ℃; Aqueous working fluid:+10 ℃~54 ℃
Medium viscosity range: 10~350mm2/s
Oil filtration accuracy: ≤ 30 µ m
Rated operating pressure: 31.5MPa
Technical Data
| Nominal Diameter mm | 10 | 20 | 30 |
| Rated operating pressure MPa | 31.5 | ||
| Nominal flow rate L/min | 40 | 100 | 200 |
| Positive opening pressure MPa | a=0.04, b=0.4 | ||
Dimensions
| Size | Model | A | A1 | A2 | A3 | A4 | B | B1 | B2 | C | H | H1 | I | n | Ø1 | Ø2 | M |
| 10 | AJ-H*10B | 67 | 42.9 | 35.7 | - | 7.1 | 90 | 66.7 | 33.3 | 72.5 | 70.5 | 30 | 16 | 4 | Ø13 | Ø22 | M10X45 |
| 20 | AJ-H*20B | 86 | 60.3 | 49.2 | - | 11.1 | 105 | 79.4 | 39.7 | 94.3 | 83 | 36 | 15 | 4 | Ø20 | Ø32 | M10X50 |
| 30 | AJ-H*30B | 108 | 84.1 | 67.5 | 42.1 | 16.7 | 120 | 96.8 | 48.4 | 118.1 | 106 | 45 | 16 | 6 | Ø30 | Ø40 | M10X60 |
