Butterfly Valve Pressure Testing Machine Technical Overview（Butterfly Valve Test Bench Technology Overview）
Model: JLD Series (Flanged/Wafer Type Butterfly Valve Dedicated)
Functional Positioning: A fully automatic sealing and strength testing platform specifically designed for butterfly valves, covering factory testing, type testing, and re-inspection needs for butterfly valves from low to medium-high pressure (PN10~PN40). Supports soft-seal/metal-seal butterfly valves, compatible with mainstream connection types such as wafer, flange, and double-flange.
Five Core Technical Features
1. Intelligent Adaptive Clamping System
Three-point floating sealing structure: Hydraulically driven upper sealing disc automatically compensates for butterfly valve flange surface parallelism deviation (≤±2°), avoiding sealing failure caused by valve body deformation.
Constant Pressure Closed-Loop Control: Pressure sensor provides real-time feedback of sealing surface clamping force; PID algorithm dynamically adjusts oil pressure with an accuracy of ±0.5MPa, preventing overpressure damage to the valve body.
2. Dual-Media Testing Capability
Test Type
Media
Pressure Range
Application Scenarios
Shell Test
Water (optional rust inhibitor)
1.5×PN (Max 6.4MPa)
Valve Body Strength Verification
Sealing Test
Air/Nitrogen
1.1×PN (Max 4.4MPa)
Low-Pressure Bubble Leak Detection (Sensitivity 0.1mm)
Dual-Truncation Test
Water + Air Combination
Step-by-Step Pressure Increase
API 598 Standard Dual-Truncation Seal Certification
3. High-Efficiency Integrated Testing Process
Hydraulic
Pneumatic
Valve Body Clamping
Automatic Water/Air Injection
Pressure Mode Selection
Hydraulic Test: 0→1.5PN, stabilizing for 5 min
Air Tightness Test: 0→1.1PN, holding pressure for 3 min + soap solution leak detection
Automatic Pressure Relief/Drainage
Generate PDF Report
4. Safety and Reliability Design
Dual Redundancy Protection: Mechanical safety valve (relief value 110%PN) + Electrical overpressure emergency stop, compliant with ISO 5208 safety standards.
Splash-proof structure: The test chamber uses a 304 stainless steel sealed cover (pressure resistance 10MPa), and the viewing window is equipped with tempered glass (thickness 12mm). 5. Intelligent Data Management
Industrial IoT Architecture:
4G module uploads test data to the cloud (SQL database)
Barcode scanner associated with valve ID, tracing test records (pressure curve/leakage rate/operator)
Real-time push notifications of abnormal alarms via WeChat (e.g., pressure drop > 5%)
Technical Parameter Comparison
Project
Traditional Pressure Testing Bench
JLD Butterfly Valve Pressure Testing Machine
Single Valve Test Cycle
≥15min
≤7min (air tightness test only 3min)
Maximum Valve Diameter
DN50-DN600/DN50-DN800/DN300-DN1200/
DN1200-DN2400 (customized hydraulic expansion)
Leakage Detection Accuracy
Visual observation of bubbles
Electronic flow meter (0.01L/min)
Energy Consumption
15kW·h/valve
8.5kW·h/valve (frequency converter control)
Industry Application Scenarios
Manufacturing: Batch factory testing of butterfly valves (supports 8-hour continuous testing ≥50 units)
Power Plant Maintenance: Re-inspection of flue butterfly valves after online maintenance (with mobile units)
Certification Laboratory: Compliant with API 609/EN 593/AWWA C504 Certification Requirements
Note: Custom upgrades are supported, including ultra-low temperature testing (-196°C liquid nitrogen environment), high-pressure gas sealing (PN100), and other special operating conditions.
This equipment’s modular design reduces maintenance costs (MTBF of key components > 100,000 cycles), significantly improves butterfly valve inspection efficiency and data reliability, and helps companies obtain TSG D7002 pressure piping component certification.
