Extended Horizontal Double Hydraulic Jack Axial Press Valve Test Bench

Adopting dual hydraulic cylinder synchronous jacking design, this Extended Horizontal Double Hydraulic Jack Axial Press Valve Test Bench applies even axial force on both ends of the valve, ensuring uniform stress distribution and firm clamping all the time. It can complete high-pressure shell strength test and long-time seat tightness pressure holding leakage inspection, fully complying with GB/T13927-2022 and API 598 international valve testing specifications. Equipped with ultra-long adjustable stroke mechanism, hydraulic synchronous control system and built-in self-locking safety protection interlock device, the bench supports water-air dual testing media switching. 

It thoroughly solves common technical pain points of long valves during pressure testing: inaccurate centering alignment, uneven stress deflection and unstable pressure holding. It is the ideal dedicated inspection equipment for factory quality control of extended valves used in long-distance transmission pipelines. Basic standard parameters: Max applicable caliber DN400, total weight 8 tons, overall dimension 304518701200mm, rated power 6.75KW. The maximum stroke, bearing tonnage and test pressure can be customized according to customer actual valve length and working condition demands. We provide CE certification upgrading, multi-language operation panel and 415V export voltage adaptation services for overseas pipeline and valve manufacturers.

Seven Core Differentiated Advantages

1.Lengthened Integral Bed Frame + Ultra-long Adjustable Stroke (Core Original Design) The biggest differentiated advantage of Extended Horizontal Double Hydraulic Jack Axial Press Valve Test Bench: extended rigid base frame with super long sliding adjustment stroke, perfectly accommodates extra lengthy pipeline valves that cannot be clamped by ordinary standard test benches, flexible adaptability to various valve body lengths.

2.Dual Hydraulic Cylinder Synchronous Axial Jacking Balanced Clamping Two hydraulic jacks run synchronously under closed-loop hydraulic control, clamping force acts on two end faces symmetrically; no eccentric load, bending moment or lateral shear force generated on long valve bodies, effectively preventing valve deformation during high-pressure long-time holding.

3.Perfectly Solve All Pain Points of Long Valve Pressure Testing Eliminates three major problems of long industrial valves testing: difficult centering positioning, uneven stress leading to sealing deviation, pressure fluctuation causing failed tightness inspection; stable clamping guarantees authentic and repeatable detection data.

4.Water & Air Dual Medium Independent Circulation Pressure System Separate water filling pipeline and air pressurization pipeline are arranged independently; water is used for shell strength hydrostatic test, compressed air for internal tightness leakage detection. PLC constant pressure control system automatically compensates pressure loss during holding period, pressure fluctuation ≤±1%.

5.Heavy-duty Integral Stress-relieved Welded Base Frame The whole bed is fabricated with thick steel plate one-piece welding, followed by stress relief annealing treatment; total load capacity up to 8 tons, long-term continuous heavy-load operation without frame bending, twisting or vibration deformation.

6.Multi-layer Self-locking Safety Interlock Protection Mechanism Built-in hydraulic clamping overpressure self-lock, test pressure over-limit automatic relief, stroke limit anti-collision, emergency stop power-off four-fold safety interlock; all power output will be cut off instantly once abnormal conditions occur, complying with EU CE industrial machinery safety standards.

7.Reserved Digital Intelligent Upgrade Expansion Port Main electrical control cabinet reserves industrial communication expansion interface, customers can later retrofit touch screen automatic testing program, pressure curve recording, electronic inspection report export and MES system docking functions to realize full digital traceability of batch inspection records.

Complete Technical Parameter Table

Seven Target Application Scenarios

1.Professional Long Pipeline Valve Manufacturing Factories: Batch offline delivery inspection of elongated transmission pipeline flange & welded valves.

2.Long-distance Oil & Gas Pipeline Equipment Manufacturers: Pressure performance verification of long body cut-off and regulating valves for trunk pipelines.

3.Large-scale Municipal Water Supply Pipeline Projects: Acceptance tightness test of long buried pipeline valves.

4.Thermal Power & Central Heating Power Plants: Periodic re-inspection of long auxiliary pipeline valves in heat supply systems.

5.Professional Special Length Valve Repair & Maintenance Station: Post-renovation performance retest for recycled used long industrial valves.

6.Overseas Oil & Gas EPC Engineering Companies: Custom long valve dedicated testing equipment with complete CE export certification documents.

7.Valve Structure R&D Laboratories: Fatigue cycle pressure test for newly developed elongated valve prototypes under different pressure grades.

Pre-sales, In-sales & After-sales Global Integrated Service System

Pre-sales Customized Technical Support

Professional long valve testing engineers conduct one-on-one technical communication, confirm valve overall length, caliber range, maximum test pressure and stroke requirements; provide equipment layout drawing and free valve sample pressure testing verification service, issue targeted customized testing scheme and formal quotation within 24 working hours.

In-sales Production & Export Shipment Service

Whole production progress tracked by real-time video; full-load continuous pressure cycle test completed before delivery with original test records archived. Export version adopts extra thick solid wood frame + steel belt shockproof & moisture-proof reinforced packaging; hydraulic schematic, electrical wiring drawing, multilingual operation manual and full set of customs clearance certification documents are delivered together with the machine.

After-sales Global Quality Assurance Service

Dual hydraulic jack cylinders, hydraulic power stations, PLC controllers and pressure sensors enjoy 24-month global warranty; free replacement of non-artificial damaged spare parts within warranty period. We provide remote online parameter debugging, complete operation video tutorials, coordinate local overseas agents for on-site installation, commissioning and maintenance; lifelong supply of general hydraulic spare parts and free long-term valve pressure testing technical consultation.

FAQ & Official Purchase Guidance

Frequently Asked Questions

Q1: Why choose this lengthened bench for long body valves instead of ordinary test benches? 

A1: It is designed with lengthened bed frame and ultra-long adjustable stroke exclusively for elongated valves, dual cylinder synchronous clamping avoids bending deformation of long thin valve bodies, positioning accuracy and pressure holding stability are far superior to standard ordinary models.

Q2: Will synchronous double cylinder clamping cause valve deviation? 

A2: Closed-loop hydraulic synchronous control ensures the pushing speed and thrust of two cylinders are completely consistent, the valve is centered all the time without deflection or offset.

Q3: Can pressure curve recording and electronic report function be upgraded later? 

A3: The control system reserves digital expansion interface at factory, all intelligent functional modules can be retrofitted after equipment purchase.

Q4: Is CE certification available for overseas export trade? 

A4: We can complete full CE industrial machinery safety transformation, configure multi-language operation panel and 415V export voltage, provide complete CE certification documents for customs clearance and overseas project acceptance audit.

Q5: What is the standard production delivery cycle? 

A5: Standard configuration delivery cycle: 30 working days; customized extra long stroke, ultra-high pressure version delivery cycle: 35 working days.

Purchase Guidance

Please send detailed information including overall valve length, applicable caliber range, maximum test pressure and export certification demands to our engineering team. We will formulate a complete dedicated long valve pressure testing solution and preferential bulk procurement quotation within 24 hours, supporting annual framework cooperation orders for pipeline valve manufacturers and global oil & gas, water conservancy long-distance pipeline EPC supporting projects.