Pressure tests. Certification tests of LPG and CNG
We offer:
- Hydrostatic pressure tests
- Pressure vessel tests
- Destructive tests up to a pressure of 300 MPa
- Residual strength tests
- Tests of heat exchangers, evaporators and condensers
- Metal as well as composite hydraulic member tests
- Brake tube tests
- Hydraulic hose tests
- Hydrodynamic pressure tests
- Pulsed pressure tests of heat exchangers, evaporators and condensers
- Cyclic stress tests of break tubes
- Cyclic stress tests of hoses
- Temperature and humidity tests
- Tests of devices at extreme temperatures (-70 to 180 deg. C) and relative humidity from 10% to 95% up to dimensions 1000 x 1000 x 2500 mm
- LPG / CNG component tests
- Homologation tests of systems and components for LPG and CNG alternative fuelling of cars according to ECE Regulation No. 67.01, ECE Regulation No. 110 and standards ISO 15500
Equipment (selection):
- 300 MPa static pressure sources
- Dynamic pressure sources for cyclic load up to 45 MPa
- Climatic chamber for temperature and humidity tests
- Standards for pressure gauges calibration
Standards (most frequent types of test - hydraulics):
| ČSN EN ISO 6803 | Rubber or plastics hoses and hose assemblies - Hydraulicpressure impulse test without flexing (ISO 6803:2008) |
| ČSN EN ISO 1402 | Rubber and plastics hoses and hose assemblies - Hydrostatic testing |
| ČSN 11 9008 | Hydrostatic machinery. General testing methods |
| ČSN EN 378-2 | Refrigerating systems and heat pumps - Safety and environmental requirements - Parts 2: Design, construction, testing, marking and documentation |
| ČSN EN 13322-1 | Transportable gas cylinders - Refillable welded steel gas cylinders - Design and construction - Part 1: Carbon steel |
| ČSN EN 13322-2 | Transportable gas cylinders - Refillable welded steel gas cylinders - Design and construction - Part 2: Stainless steel |
| ISO 4038 |
Road vehicles - Hydraulic braking systems - Simple flare pipes, tapped holes, male fittings and hose end fittings |
| ISO 7241-2 | Hydraulic fluid power - Quick-action couplings - Part 2: Test methods |
| ISO 15500 | Road vehicles - Compressed natural gas (CNG) fuel systém components |
| ECE Regulation No. 67.01 | Uniform provisions concerning the approval of: I. Approval of specific equipment of vehicles of category M and N using liquefied petroleum gases in their propulsion system II. Approval of vehicles of category M and N fitted with specific equipment for the use of liquefied petroleum gases in their propulsion system with regard to the installation of such equipment |
| ECE Regulation No. 110 | Uniform provisions concerning the approval of: I. Specific components of motor vehicles using compressed natural gas (CNG) in their propulsion system; II. Vehicles with regard to the installation of specific components of an approved type for the use of compressed natural gas (CNG) in their propulsion system |
Customers:
- Pressure vessels makers
- Hose and brake tube makers
- Air conditioner for car manufacturers
- LPG / CNG components makers
- Manufacturers, vendors and users of pressure gauges
- Certification tests of LPG and CNG
Contact:
Ing. Miroslav Valeš, Ph.D.
director of VZLU TEST, a.s.
Tel: +420 225 115 267, +420 724 966 830, fax: +420 225 115 430
e-mail: vales@vzlutest.cz
Ing. Jindřich Žďánský
Head of Hydraulics Testing Laboratory
Tel: +420 225 115 221, +420 602 385 074, fax: +420 225 115 430
e-mail: zdansky@vzlutest.cz
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