Leak test benches with water, glycol, SF6, oil and gas up to 3000 bar. In order to ensure that components are manufactured without leaks, they are exposed to proof tests to identify leaks and weak spots.
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Leak Test Stands
With Fluids and gas
To make sure that cast parts, tubes, hoses, assemblies, and various other pressure vessels are manufactured as non-leaking, they are tested with a non-destructive leak test. Oils, water, glycol, air, nitrogen, or sulfur hexafluoride (SF6) are used for this type of test. A leak is usually an unintended hole or cracks in a component resulting in a pressure drop from high to low. When an internal component or pressure vessel is above normal atmospheric pressure it is said to be in a state of positive pressure, if a seal or crack bridges the sealed positive pressure area with a lower pressure region or atmospheric pressure region the positive pressure will escape and decay or defuse to a lower pressure; the location of escaping pressure is the leakage location.
Depending on the requirement, the leak test rig can be equipped with a vacuum unit or a low- or high-pressure module.
The test rigs are designed by a modular system to utilize previously designed modules and fit them to the customer’s exact requirements for reliable and repeatable test results. The Poppe + Potthoff leak test stands can be manufactured as multi-chamber test systems, connected to a climate chamber, or add a media heating and cooling unit to match your testing needs. Test procedures and measurement data are logged, visualized, and documented via LabView. Our systems are UL or CE compliant as required.
Multi-Purpose Leak Test Rig up to 3000 bar
Depending on the requirements the rig will be equipped with a pressure pump, our patented fine-control method, and a pneumatic or a hydraulic pressure intensifier to generate pressure. A PC allows programable pressure curves and test setups and extensive data acquisition, and visualization for optimal analysis. The rig allows various test setups tailored to customers’ test specifications.
Performance Data
SF6 Leak Test Stand
The SF6 leak test rig allows tightness tests on common rails and other components. The pressure is generated through a pressure convertor, while the SF6 is contained in the high-pressure medium. A leakage is determined in the vacuum chamber with a laser sensor. For efficiency, a clamping device is located in the test chamber. It is adjustable and can be used for almost every type of common rail. Adaptation of the rails is enabled through high-pressure hoses and couplings. The control unit is a Siemens PLC and involves a touch panel as an input and display unit.
Performance Data
Leak test rig for Fittings
With the Poppe + Potthoff leak test systems valves, cast parts and many other (automotive) components and assemblies can be tested for leakage. The system allows pressure (drop) tests on a wide range of components up to a pmax. pressure of 1 000 bar. The pressure points are approached with a pressure intensifier and allow flexible pressure ramps and pre-programmed holding times. This unique system allows impulse pressure to be applied to the test DUT and allows trapezoidal (square) as well as sinusoidal (wave) curves.
Performance Data
Overpressure-vacuum test stand
The pressure leak test stand allows testing in various pressure ranges and is unique with its functionality of underpressure functionality. The leak test rig can achieve overpressure-overpressure, overpressure-vacuum, and vacuum-vacuum pressure ranges. The pressure is variably adjustable and can take place under a wide range of climatic conditions. Test temperatures of -72 ° C to + 180 ° C and a controllable humidity of up to 98% can be reached in a climate chamber. Three (or more) test connections are located on each side of the test chamber and can be shut off individually via separate valves. A leak test is detected at every DUT and excludes it from leakage from the test circuit.
Performance Data
Leak test bench <1050 bar with gas (helium)
The leak test stand is suitable for gas pressure tests up to 1050 bar. Tests can be performed with 95/5 forming gas (N2/H2), helium or nitrogen. Standard 50L gas cylinders or other sources serve as the media source. A leak is detected and registered by a sniffer (e.g. Inficon P3000XL).
The leak test stand is equipped with a special safety concept to protect the operator. New components are tested with water in a safety chamber provided for their bursting pressure (e.g. up to 3000 bar). A safety box is installed in the climate chamber for testing with gas, which protects against potential component splinters. Various flexible hoses are attached to the box, which is equipped with nozzles to detect leakage at several points on the component. The hoses are connected to outlets outside the climate chamber. At the outlets, the operator can use the sniffer to identify the leak. For an underwater test, the safety box is removed or the door of the box is hung out. Often tested components in this system are H2 Ontank Valves.
Performance Data
Test as a Service
We offer several pressure tests in various pressure ranges as a test service. Whether for research and development or serial production, please contact us with your testing requirements for a non-binding offer.
PRESSURE TEST BENCHES AND APPLICATIONS
PRECISE, REPEATABLE AND RELIABLE
As a specialist in pressure testing technology and state-of-the-art test rigs, Poppe + Potthoff Maschinenbau supports the development and production of particularly resilient components made of various materials – especially for automotive, shipbuilding and mechanical engineering as well as fluid and the medical industry. We offer individually designed test benches such as burst pressure test rigs, pressure cycle test benches, leak test systems, functional test rigs and autofrettage systems.
Pressure cycle test stand with vacuum test
Pressure cycle test cooling systems of ECUs, PTC heaters, high-voltage coolant heaters, ACDC and DCDC converters and other media-carrying components while controlling the ambient and media temperature of e.g. water-glycol at temperatures from -40 °C to 140 °C .
Function test bench: Battery simulation under the influence of temperature
A temperature-controlled volume flow (e.g. 50 l/min) can be generated with the Poppe + Potthoff test stands for functional testing of media-carrying components. In addition, a component from e-mobility can be energized if required and pressure cycles applied.
Leak Test Stands
With the leak test rigs from Poppe + Potthoff, various components and assemblies can be tested for leaks by means of a drop in pressure. Depending on the test requirements, our systems including a vacuum unit and low-pressure or high-pressure module can be designed for optimal leak testing. In addition, Poppe + Potthoff offers e.g. bubble tests in a water bath / underwater tests with air and gas.
Burst Test Stands up tp 200 bar
In order to prove the quality of media-carrying components, hose lines, pipes, pressure vessels and other components are pressurized until they burst.
Autofrettage up to 12 0000 bar
A flexible and expandable system for performing autofrettage on various components such as common rails and pump heads up to 12,000 bar.
Compressed Air Boosters
Poppe + Potthoff Maschinenbau GmbH supplies compressor units and pressure control systems up to 400 bar. We offer you ready-to-connect units to increase the existing pressure for pneumatic and hydraulic applications. This allows the performance of existing systems to be expanded flexibly and efficiently.
Test bench for H2 components
We offer pressure test systems for the development and validation of hydrogen and nitrogen components. The focus is on test benches in the area of pressure cycle testing, bursting pressure testing and hydrostatic strength testing.
1050 bar helium / nitrogen / hydrogen
A leak test bench equipped with a pressure module up to 1050 bar, an optionally integrated climatic chamber and a gas sniffer (e.g. Inficon) to detect leaks in H2 components such as on-tank valves, hoses, pipes, fittings, regulators, valves and fuel cell components.
Automotive
Automotive testing includes a wide range of tests. Poppe + Potthoff Maschinenbau supports the industry with state-of-the-art pressure test benches, autofrettage systems and function test benches.
Aerospace
Test systems by Poppe + Potthoff Maschinenbau put fluid systems and components for aviation applications to a hard test. During a longterm design and service life test, they undergo up to millions of pressure load changes in order to simulate the service life of a component.
Home Appliances
Household appliance manufacturers are aware of the importance that their media-carrying components must be leakproof from day one, and components must be able to withstand a higher pressure load than the operating pressure. Poppe + Potthoff Maschinenbau supports the industry with various pressure testing systems.
Medizintechnik
Test benches for medical technology components from Poppe + Potthoff Maschinenbau put a wide variety of components to the test. Reliable, repeatable and accurate pressure tests and verification processes ensure the quality of a component during research and development, and production.
Shipbuilding
Marine engines are made up of components that are exposed to extremly high pressures and require pressure testing. Among many others, cooling systems, pumps and valves in ship engines are subjected to pressure and tested for their resilience using pressure test benches from Poppe + Potthoff.
Oil and Gas
Various components from the oil and gas industry can be tested on Poppe + Potthoff pressure test benches. Drill pipes, pipes and (gas) valves are components that are exposed to changing pressure and temperature conditions and require pressure testing to ensure quality and safety.
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Our experienced technical sales team will help you with the implementation of your project and will find a solution tailored to your specifications and your requirements. We are represented internationally and can support you and your company worldwide. Our team has completed hundreds of projects many of which involved supporting test facilities with identical equipment. P+P Maschinenbau is your internationally trusted partner.
Expertise, excellent knowledge of the market and affinity for our products guarantee our success.