The Laboratory of Tests carries out testing of hydraulic valves for conformity with the safety requirements according to items 5.1 ÷ 5.5 of the PN-EN 1804-3+A1:2010 Standard.
The accreditation includes:
1. Tests of hydraulic valves of A type:
- general requirements as regards the tests according to item A.1.3.1 of the Standard,
- leak proof test according to item A.1.3.2 of the Standard,
- test of operational pressure and of opening and closing pressure in ambient temperature according to item A.1.3.3 of the Standard,
- test of operational pressure and opening and closing pressure for valves with compressed gas according to item A.1.3.4 of the Standard,
- test at pulse pressure increase according to item A.1.3.5 of the Standard,
- impact test according to item A.1.3.6 of the Standard,
- test of relationship between opening pressure and flow intensity according to item A.1. 5.53.7 of the Standard,
- test of fatigue strength according to item A.1.3.8 of the Standard,
- test of resistance to pressure at outflow according to item A.1.3.9 of the Standard.
2. Tests of hydraulic valves of B type:
- general requirements as regards the tests according to item A.1.4.1 of the Standard,
- leak proof test according to item A.1.4.2 of the Standard,
- pressure test according to item A.1.4.3 of the Standard,
- test of pressure impact at outflow according to item A.1.4.4 of the Standard,
- test of switching according to item A.1.4.5 of the Standard,
- test of fatigue strength according to item A.1.4.6 of the Standard.
3. Tests of hydraulic valves of C type:
- general requirements as regards the tests according to item A.1.5.1 of the Standard,
- leak proof test according to item A.1.5.2 of the Standard,
- pressure test according to item A.1.5.3 of the Standard,
- test of fatigue strength according to item A.1.5.4 of the Standard,
- test of pressure impact at outflow according to item A.1.5.5 of the Standard,
- test o switching according to item A.1.5.6 of the Standard.
4. Tests of hydraulic valves of D type:
The valves of D type are tested according to items A.1.3 ÷ A.1.5 of the Standard, depending on type of valves to which they can be classified – A, B or C.