Hydraulic Test Stand 350 kW — Hydraulic valve validation. 350 kW.

Introduction

In mobile and industrial hydraulics, a valve is not "just a component" — it is the control authority of the whole machine. Flow metering accuracy decides whether an excavator feels smooth or jerky; leakage decides whether a system holds load safely; response time decides whether a closed-loop controller behaves or hunts; and pressure drop decides whether you lose power to heat instead of useful work.

Neometrix's Automated Hydraulic Control Valve Test Bench is built as a universal, automated test rig for validating a wide range of mobile sectional valves and industrial electrohydraulic / proportional valves. It supports the full lifecycle of valve validation: incoming inspection, calibration / tuning, performance characterisation, endurance verification, and troubleshooting after field feedback — all using repeatable sequences and archived datasets.

What this machine is designed to test

Mobile valves

• CMA (Thor twin spool sectional valve system)
• CLS180 sectional valve system / valve banks

These valve families typically require multi-port routing, stable supply conditions, and the ability to validate behaviours that only appear when multiple functions interact (flow sharing, saturation, compensation stability). The platform is built to handle such complexity with structured procedures rather than ad-hoc manual testing.

Industrial valves

• SiCV (Screw-in Cartridge Valves)
• Two-stage proportional electrohydraulic directional control valves (pilot + mainstage)
• Electrohydraulic directional control valves for Size 3 and Size 5 formats

Industrial valve testing emphasises repeatable command / response characterisation, fine leakage validation, calibration logic (including LVDT-based calibration where applicable), and clean dynamic response records.

With suitable fixtures and routing, the bench can be tuned for virtually any hydraulic control valve architecture — directional, pressure-control, flow-control — covering cartridge, subplate, and manifold-mounted designs including relief, reducing, sequence, counterbalance / load-holding, and priority flow control variants.

Core test capabilities

The stand is not limited to a single "pressure test." It is designed for a broad mix of static, quasi-static, and dynamic validation — endurance testing, pressure drop across flow ranges, hysteresis, high-pressure leakage, response time, max flow verification, pull-in / drop-out electrical checks, flow accuracy, flow sharing, and flow compensation. Tests combine into programmed sequences that turn test data into engineering decisions.

System architecture

1. Hydraulic power pack & flow generation

Multi-motor, multi-pump architecture generating high flow, stable pressure control, and repeatable ramps or profiles for dynamic tests. Small power stages run conditioning / low-flow tests; larger stages scale up for high-flow or high-load events. The system is never forced to run at an extreme operating point for every test type.

2. Test area interfaces & plumbing flexibility

Multiple supply and work port arrangements. Interface flexibility matters because valve testing is fixture-driven — faster changeovers mean higher throughput and less plumbing-error risk. Handles different port configurations (P/T/A/B/LS / drain), pilot supply, and section-specific valve-bank routing.

3. Electrical drive & valve actuation

Modern EH valves need more than "24 VDC" — they need correct current drive, PWM, CAN behaviours, and signal conditioning. The bench supports electrohydraulic spools, hydraulically piloted stages, and setups where actuator / control is provided externally while the bench performs controlled hydraulic loading and measurement.

4. Instrumentation, HMI & data logging

Multi-channel measurement and logging — flow, pressure, temperature, command signals — so each test produces a time history that can be reviewed, plotted, and archived for QA traceability. Proper logged traces make diagnosis fast — instability, sensor drift, a plumbing issue, or an electrical anomaly all leave distinct signatures.

End-of-line (EOL) testing for mobile OEMs

Ideal for EOL testing in mobile hydraulics manufacturing, ensuring every valve meets OEM quality standards before dispatch. Automated pass / fail testing on flow rate, pressure characteristics, leakage, actuation response. Integrates with MES and ERP systems for traceability and digital test reports — standardised test cycles with minimal operator intervention, reducing human error and improving field reliability.

Target industries & customers

Competitive advantages

• 350 kW — one of the highest-power hydraulic valve test benches from an Indian manufacturer
• 9 test modes in one bench — ΔP, hysteresis, max flow, leakage, response, impulse, electrical, flow sharing, compensation
• Multi-valve compatibility — mobile + industrial families (CMA, CLS180, SiCV, proportional, directional)
• Automated, repeatable sequencing — traceable, auditable results for ISO and OEM quality systems
• High flow & high pressure — up to 400 LPM / 420 bar matches real duty conditions
• Industry 4.0 / IoT ready — a connected, data-driven QA platform
• 20+ years domain expertise — defence, aerospace, industrial hydraulics
• CE marked — accepted globally
• Turnkey — single vendor for design, manufacture, commissioning, training, after-sales