DN50-125 Integrated Dual Purpose Valve Seat and Ball Sphere Lapping Machine

The DN50-125 Integrated Dual Purpose Valve Seat and Ball Sphere Lapping Machine is a dedicated double-station precision finishing machine, specially designed for mirror finish lapping of high-pressure ball valves, gate valves and pipeline flanged valves, improving flange flatness, parallelism and sealing surface roughness to achieve zero-leakage hard seal performance.

1.Dual servo spindle synchronous CNC control system: Two independent servo spindles run synchronously under unified PLC program control, performing simultaneous bilateral lapping on both valve flange ends, eliminating cumulative positioning errors from repeated single-side processing, ensuring consistent flatness and high parallelism across batches.

2.Constant-pressure elastic floating structure: Constant pressure elastic floating fixture design, adaptive follow-up lapping, uniform abrasive contact force, to achieve ultra-fine mirror surface effect, greatly improving hard seal valve sealing reliability and service life.

3.Touch screen CNC unattended cycle lapping: Customizable lapping cycle macro programs, adjustable rotation speed, lapping time and pressure parameters, realizing 24h unattended batch mirror finishing, reducing manual operation and ensuring consistent repeatable precision.

4.Heavy anti-vibration integral bed & closed-loop coolant system: Thick integral welded rigid bed to suppress high-speed lapping vibration, closed-loop coolant circulation system for continuous lubrication and chip removal, reducing thermal deformation and abrasive wear, maintaining long-term lapping precision and surface quality.

This DN50-125 Integrated Dual Purpose Valve Seat and Ball Sphere Lapping Machine is widely used in natural gas, petrochemical, power station, hydrogen energy high-pressure valve manufacturing workshops, applicable to stainless steel, alloy steel, stellite hardfacing hard seal valves. It can adapt to ANSI, GB, DIN, GOST international standard flanged valves, supporting multilingual HMI, CE compliance modification and long-term valve factory framework orders. If you need high-precision hard seal valve hard seat mirror lapping equipment, please contact us to get the full datasheet and formal quotation within 24 hours.

Product Core Highlights

The DN50-125 Integrated Dual Purpose Valve Seat and Ball Sphere Lapping Machine features Dual-spindle Synchronous Mirror Lapping: Dual servo synchronous constant-pressure lapping, realizing simultaneous bilateral flange mirror finishing, ensuring ultra-high parallelism and flatness for zero-leakage hard seal assembly.

Constant Pressure Floating Adaptive Lapping: Elastic floating fixture ensures uniform abrasive contact force, eliminating rigid positioning stress, achieving micron-level mirror finish on hard alloy sealing surfaces.

PLC Unattended Automatic Lapping Cycles: Custom macro lapping programs, unattended continuous batch production, stable repeatable precision, reducing human error and labor cost.

Heavy Vibration-dampening Machine Base: Integral heavy welded bed, minimizing lapping vibration, maintaining long-term geometric precision and consistent mirror surface effect for mass production.

Multilingual & CE Compliant Industrial Configuration: Multilingual touch screen CNC system, CE safety modification, MES system connectivity, suitable for global smart valve factories and EPC energy projects.

Core Technical Advantages

DN50-125 Integrated Dual Purpose Valve Seat and Ball Sphere Lapping Machine adopts Dual-spindle Synchronous Constant-pressure Lapping Technology: Main PLC closed-loop synchronous control of dual servo spindles, consistent lapping trajectory and pressure, eliminating sequential single-side lapping cumulative error, meeting API 598 valve sealing inspection standards for high parallelism flange finishing.

Elastic Floating Constant-pressure Lapping Technology: Elastic floating follow-up fixture structure, adaptive uniform pressure lapping, avoiding rigid clamping stress deformation, critical for ultra-fine mirror finish of Stellite hardfacing alloy hard seal surfaces.

PLC CNC Macro Cycle Unattended Lapping Technology: Dedicated valve hard seal lapping macro program library, one-key automatic cycle lapping, preset lapping parameters, reducing operator skill dependence, realizing standardized mass mirror lapping for valve smart factories.

Closed-loop Coolant Circulation & Isolated Chip Removal Technology: Closed-loop coolant lubrication + independent chip baffle structure, continuous cooling lubrication, reducing thermal deformation and abrasive consumption, improving surface roughness consistency and extending abrasive tool life.

Comparison with Ordinary Single-head Manual Valve Lapping Machines

Detailed Technical Parameters

Order Acceptance & Long-term Cooperation Support

Production Capacity: Standard dual-spindle lapping machines monthly output 5-8 sets, standard lead time 30 days, extra-large flange models 40 days.

Global Standard Adaptation: Supports ANSI, GB, DIN, GOST, JIS global valve flange standards, can adapt to hydrogen energy, LNG, long-distance pipeline high-pressure valve specifications.

Long-term Framework Orders: Accept annual framework orders for valve smart factories, overseas EPC energy project turnkey production lines, regional industrial equipment distributors.

Industry Application: LNG, natural gas, petrochemical, hydrogen energy, thermal power, nuclear auxiliary high-pressure hard seal valve manufacturing lines.

Compliance Documentation: CE certification, factory test reports, API standard validation documents, multilingual operation manuals, export documentation for overseas customs clearance and project acceptance.

After-sales Service & Global Technical Support

Pre-sales Service

● Professional valve process engineers provide API/global standard lapping process consultation, 3D layout drawing design, lapping process parameter simulation and sample lapping verification.

● Provide formal technical bid documents for overseas EPC bidding projects, confirm mirror finish tolerance requirements and deliver formal quotation.

In-sales Service

● Weekly production progress video tracking, full synchronous cycle lapping test before shipment, formal factory acceptance test report.

● Heavy steel frame reinforced export plywood packaging, shockproof & moisture-proof treatment for intercontinental ocean/rail transport.

After-sales Service

● 24-month global warranty for dual servo spindle systems, PLC CNC controller and core mechanical components, free replacement of non-human damaged parts.

● Multilingual video tutorials, remote PLC macro program debugging, global online technical support, and regional agent field service support.

● Lifelong spare parts supply and lapping process technical guidance, universal servo/electrical components for easy local maintenance, international courier urgent spare parts service available.

FAQ

Q1: Are you a trading company or a manufacturer?

A1: We are Wenzhou Yufeng Valve Machinery Manufacturer, a direct factory specializing in the R&D and production of industrial valve processing & lapping equipment.

Q2: What is your MOQ?

A2: Our MOQ is just 1 set. We highly welcome small trial orders as well as bulk procurement for large B2B projects.

Q3: What quality certifications do your valve lapping machines have?

A3: Quality is our core advantage. Our DN50-125 Integrated Dual Purpose Valve Seat & Ball Sphere Lapping Machine has passed strict API, GB, ISO, and CE certifications, ensuring full compliance with global industrial standards.

Q4: Can your equipment test & process GOST (Russian standard) valves?

A4: Absolutely. We can adapt the DN50-125 Integrated Dual Purpose Valve Seat & Ball Sphere Lapping Machine for full GOST standard hard seal valve mirror finishing, fully compatible with GOST standards, as well as standard API, DIN, and GB valves.

Q5: Do you support OEM/ODM customized services?

A5: Yes, we provide tailored solutions. We can customize the maximum test pressure, clamping dimensions, and control systems based on your specific valve types.

Q6: What is the standard lead time for an order?

A6: For standard testing machines, the lead time is typically 21-30 days. Customized valve lapping machines may take 30-35 days, depending on the design complexity.

Q7: What payment terms do you usually accept?

A7: We usually accept T/T in advance, Visa, WestUnion with a 30% deposit and 70% balance before shipment. L/C at sight is also acceptable for larger corporate orders.

Q8: How do you pack the equipment for international shipping?

A8: We use robust, fumigation-free export standard wooden cases with inner moisture-proof wrapping. This ensures the equipment remains intact during long-distance sea or rail freight to your factory.

Q9: How do we install and operate the valve lapping bench upon receiving it?

A9: Our machines are delivered nearly fully assembled. We provide detailed operation manuals and step-by-step video tutorials. Our technical team is also always available online to guide your operators.

Q10: What is the warranty policy for your products?

A10: We offer 24 months standard warranty starting from the delivery date. Even after the warranty expires, we provide lifelong technical support and supply spare parts freely.

Q11: How to get an accurate quotation quickly?

A11: Please share your specific valve details: valve type, size range (DN), maximum test pressure (PN), and connection ends. Our engineers will send a precise technical proposal within 24 hours.

Q12: Are spare parts easy to obtain after warranty?

A12: We use standard, internationally recognized hydraulic and electrical components for long service life. Located in "The Pumps and Valves Capital of China", we can deliver spare parts quickly via international express.

Purchase Guide

If you are looking for a cost-effective vertical multi-connection valve test bench, or need to customize special specifications for your valve production line, please send us your specific requirements. Our technical and sales team will reply with a professional solution and competitive factory price within 24 working hours.