Pressure Impulse Test Bench / H2 Pressure Impulse Cycling Test Bench / ISO 12619 Part 3 & Part 11 · AIS-157 / Noida · India 2026 · Product Page

Pressure Impulse Test Bench

Fatigue cycles. Controlled pulses.

Automated pressure impulse test bench for check valves and excess flow valves used in hydrogen fuel systems. Programmable pressure waveform cycling to 1000 bar, high-speed data acquisition, guarded test chamber and automatic traceable reporting — aligned with ISO 12619 Part 3, Part 11 and AIS-157.

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Pressure Impulse Test Bench — hydrogen pressure impulse cycling — Neometrix

Fig · 01Pressure Impulse Test Bench — automated pressure pulse cycling for hydrogen check valves and EFVs

Max Pressure

1000bar

DAQ Speed

1000Hz rec.

Pulse Frequency

2Hz max gas

Components

CV+ EFV

Standards

ISO12619-3 & 11

Overview

Pressure fatigue. Fully automated.

The Pressure Impulse Test Bench subjects hydrogen fuel-system pressure components to repeated controlled pressure pulses to verify fatigue resistance, sealing integrity, mechanical stability and functional performance after cyclic pressure loading. Scope is aligned with ISO 12619 Part 3 for check valves and ISO 12619 Part 11 for excess flow valves.

Pressure Impulse Test Bench — detail view 2

Fig · 02 HP accumulator vessel and pulse manifold — fast-response valves and sensors

Programmable low and high pressure limits. High-speed waveform capture. Automatic PASS/FAIL.

The bench performs automated pressure pulse generation between programmed low and high pressure limits. The system records pressure-time waveform, cycle count, peak pressure, minimum pressure, temperature, alarm history and final result.

Acceptance philosophy: No rupture, no external leakage, no functional failure and no unacceptable deformation or malfunction after specified impulse cycles. Component shall maintain non-return function (check valve) and activation/reset function (EFV) after cycling.

Test medium options: Hydrogen, hydrogen-inert gas blends, nitrogen or helium; optional DI water/water-glycol for liquid impulse applications. Minimum 5% H2 with balance N2/He for blend testing where required.

Applicable WP class: Up to 70 MPa / 700 bar component working pressure class. Machine pressure range 0.2 to 100 MPa (2 to 1000 bar) standard; optional extension to 120 MPa / 1200 bar.

Key Features

Engineering highlights.

Feature · 01

Programmable Pressure Waveform

Programmable low pressure, high pressure, rise time, hold time, fall time, dwell time and cycle count. Pulse frequency 0.05 to 2 Hz typical for gas impulse mode; higher frequency possible for liquid impulse depending on component volume.

Programmable · 0.05–2 Hz · Full Waveform

Feature · 02

High-Speed Data Acquisition

Minimum 100 Hz pressure waveform capture; 1000 Hz recommended for transient analysis. Pressure, temperature, cycle count, valve status, alarm and result logged with time stamp.

100–1000 Hz · Transient · Time-Stamped

Feature · 03

Accumulator and Pulse Manifold

High-pressure accumulator, fast response valves, relief valve, pressure sensors and drain/vent line. Hydrogen-compatible SS316/SS316L wetted parts. Cone-and-thread HP fittings per pressure class.

HP Accumulator · Fast Valves · SS316L

Feature · 04

Interlocked DUT Chamber

Blast/pressure-rated interlocked test chamber. Emergency stop and automatic depressurisation sequence. H2 gas detector and ventilation/extraction provision. Overpressure, underpressure, cycle failure and door-open interlocks.

Interlocked · E-Stop · Auto-Vent · H2 Detect

Feature · 05

Interchangeable DUT Fixtures

Interchangeable adapters for check valve and excess flow valve body sizes. Dedicated inlet and outlet manifolds to maintain correct flow direction. Pressure transducer near DUT to capture true impulse waveform.

CV & EFV Adapters · Flow Direction · Near-DUT PT

Feature · 06

Automatic Report Generation

PDF/Excel report with graph, measured values, raw data export, operator ID and date/time stamp. Each test stored by serial number, batch number, component type and customer reference.

PDF · Excel · Raw Data · Batch Traceable

Gallery

Product views.

Fig · Gallery3-view photo documentation — Pressure Impulse Test Bench

Specifications

Technical parameters.

Machine Type	Automated pressure impulse / pressure cycling test bench for hydrogen components
Applicable Standards	ISO 12619 Part 3, ISO 12619 Part 11 and AIS-157
Components Covered	Check valve and excess flow valve
Working Pressure Coverage	Up to 70 MPa / 700 bar component working pressure class
Machine Pressure Range	0.2 to 100 MPa (2 to 1000 bar) standard; optional to 120 MPa / 1200 bar
Pulse Frequency	0.05 to 2 Hz typical for gas impulse mode
Data Acquisition	Minimum 100 Hz; 1000 Hz recommended for transient analysis
Test Medium	Hydrogen, H2-inert gas blend, nitrogen or helium; optional DI water / water-glycol
Temperature Range	Ambient; optional climatic chamber −40°C to +85°C
Pressure Accuracy	±0.25% F.S. or better
Control System	PLC + HMI with automatic sequence, interlocks, alarms and recipe-based control
Report Format	PDF/Excel with pressure-time graph, cycle count, operator ID, date/time and traceability

Applications

Where it applies.

01Check valve pressure fatigue and sealing integrity testing

02Excess flow valve impulse cycling and functional stability

03ISO 12619 Part 3 and Part 11 type approval qualification

04AIS-157 and UN ECE R134 compliance support

05Hydrogen component development fatigue studies

06ICAT qualification laboratory impulse test station

07OEM and tier-1 component endurance programmes

08Production batch pressure fatigue verification

09R&D pressure cycling characterisation

In Depth

The complete technical read.

Fig · 03 DUT test chamber connected to manifold via HP tubing — live waveform on HMI

Automated Test Sequence

Mount check valve or excess flow valve in correct test fixture and connect HP lines. Purge circuit with inert gas and fill/charge test volume. Perform leak check, sensor health check, door interlock check and safety permissive check. Select standard, component type, lower pressure, upper pressure, ramp time, hold time and cycle count. Automatically generate programmed pressure pulses and monitor each waveform. Detect leakage, abnormal pressure decay, pressure overshoot, cycle error, temperature alarm or component malfunction. Depressurize through controlled vent/dump line. Generate automatic test report with graph, raw data and PASS/FAIL conclusion.

Safety Notes

Hydrogen or hydrogen-blend exhaust routed to safe vent header or outdoor vent stack per site safety requirement
ATEX/IECEx compliant electricals for hydrogen hazardous area or per final area classification
Enclosed interlocked pressure-safe chamber suitable for component failure containment and operator protection
All HP parts rated above maximum test pressure with suitable design margin

FAQ

Common questions.

Q01 Which components does this bench test?

The bench tests check valves (ISO 12619 Part 3) and excess flow valves (ISO 12619 Part 11). Other hydrogen components are outside this pressure impulse row scope unless separately specified.

Q02 What pressure range can be programmed?

Standard machine: 0.2 to 100 MPa (2 to 1000 bar). Optional extension to 120 MPa / 1200 bar. Test pressure set per applicable standard, component working pressure and approved test recipe.

Q03 What pulse frequency does the machine support?

0.05 to 2 Hz typical for gas impulse mode. Higher frequency is possible for liquid impulse applications depending on component volume and pressure generation system.

Q04 How fast is the data acquisition?

Minimum 100 Hz; 1000 Hz recommended for transient pressure waveform analysis. Pressure, temperature, cycle count, valve status and alarm data are all time-stamped.

Q05 Can the machine use hydrogen as test medium?

Yes, when required. The bench supports 100% hydrogen and H2-inert gas blends with minimum 5% H2/N2 or He. Full hazardous-area safety provisions are required for hydrogen service.

Q06 Who manufactures the Pressure Impulse Test Bench?

Neometrix Engineering Pvt Ltd, Noida, India.

Ready to configure your system?

Discuss your test requirements, component scope, pressure range, standard alignment and delivery schedule with our engineering team.

Request Proposal All Products

Call us +91-7777-876-876

Fatigue cycles. Controlled pulses.

Pressure fatigue. Fully automated.

Engineering highlights.

Programmable Pressure Waveform

High-Speed Data Acquisition

Accumulator and Pulse Manifold

Interlocked DUT Chamber

Interchangeable DUT Fixtures

Automatic Report Generation

Product views.

Technical parameters.

Where it applies.

The complete technical read.

Automated Test Sequence

Safety Notes

Common questions.

Ready to configure your system?

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