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Should You Use Compression Fittings or Heat Fusion for HDPE Pipe?

For permanent, leak-resistant HDPE pipe joining, heat fusion is usually the stronger choice when trained labor, suitable equipment, and site conditions are available. Compression fittings for HDPE are often better for smaller projects, repairs, temporary work, no-flame zones, or connections th... Read More

DONSEN is Ready for the 140th Canton Fair: Join Us at Booth 9.1G03-04 & 11.2F09-10

  The countdown is on! The 140th Canton Fair (China Import and Export Fair) is almost here, and the team at **DONSEN** is thrilled to announce our participation in this landmark edition. As one of the most anticipated trade events in the global calendar, the Canton Fair provides the perfect ... Read More

PP Compression Fitting Thread Types Explained: BSP, NPT & Metric

A PP compression fitting may look simple, but the thread on its end can determine whether a piping system seals reliably or fails under pressure. In PN16 applications operating up to 16 bar, choosing between BSP, NPT, and Metric threads is not a minor purchasing detail—it affects compatibility ... Read More

How Do You Get an Accurate Quote for a Large PVC Ball Valve Order?

An accurate pvc ball valve quote requires more than a valve size and target price. Give the supplier the fluid, pressure, temperature, connection method, material requirements, operating conditions, quantity by size, packaging needs, destination, and delivery deadline. Ask for a line-by-line quo... Read More

Common Mistakes When Installing PP Compression Fittings (And How to Avoid Them)

A PP compression fitting can look simple on the bench, but in a pressurized HDPE or LDPE pipeline it becomes a precision sealing component. Small installation errors—an unchamfered pipe end, a skewed cut, a displaced O-ring, or excessive tightening—can turn a PN16-rated connection into the weak... Read More

Should You Choose a PP Ball or a PVC Ball Inside Your Valve Body?

Choose a PP ball when the valve must handle repeated operation, chemical exposure, or a polypropylene piping system. Choose a PVC ball when you need economical, widely available flow control for compatible water, drainage, irrigation, or light chemical service. The correct ball valve material de... Read More

Which Quality Tests Should Every PVC Ball Valve Pass Before Shipping?

A PVC ball valve quality test should verify body integrity, sealing performance, operating torque, dimensional consistency, and resistance to pressure before shipment. The essential sequence combines visual inspection, hydrostatic shell testing, seat leakage testing, functional cycling, and docu... Read More

What Causes a PVC Ball Valve to Leak Around the Handle Stem Seal?

A PVC ball valve leak around the handle usually comes from a worn, compressed, damaged, or incorrectly adjusted stem seal. Excessive system pressure, side loading from the pipe, chemical incompatibility, poor installation, or a scored valve stem can accelerate leakage. Isolate the line, inspect ... Read More

How Do You Choose the Right PVC Ball Valve for a New Water System?

The right PVC ball valve depends on fluid compatibility, operating temperature, pressure, pipe size, connection method, installation space, and maintenance needs. For a new water system, confirm the valve material and seal compatibility first, then match the end connections and pressure class to... Read More

Is PN16 Always Better Than PN10 for Your PP Compression Fittings?

PN16 compression fittings are not automatically better than PN10 compression fittings. PN16 indicates a higher nominal pressure class, but the correct choice depends on pipe material, operating temperature, fluid, surge conditions, installation quality, and the complete system rating. Choose PN1... Read More

What Should a Compression Fitting Sample Test Include Before Approval?

A compression fitting sample test should verify dimensional accuracy, material identity, assembly behavior, pressure resistance, leakage performance, pull-out resistance, thermal or chemical suitability, marking, packaging, and traceability. The approval decision should be based on documented te... Read More

How to Test and Maintain PN16 PP Compression Fittings for Long-Term Performance？

A PN16 PP compression joint may look simple, but its long-term reliability depends on pressure, temperature, material compatibility, seal condition, and installation quality working together. In water distribution, irrigation, and industrial fluid systems, even a small leak or pipe pull-out can... Read More
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