Blogs
Full Port vs Standard Port Ball Valve: What Is the Difference?
Full port vs standard port ball valve: the bore difference, its effect on flow and pressure drop, and how to specify the right valve for water lines.
Why Is My Ball Valve Hard to Turn? Causes and Fixes
A ball valve gets hard to turn from scale, stuck seats or a tight packing nut. Learn the causes, how to free the valve safely, and when to replace it.
DZR Brass and ISO 6509: What It Means for Insert Buyers
DZR brass resists zinc loss in water. See what dezincification is, what ISO 6509 tests and does not decide, and what to write on an insert purchase order.
Why Do PPR Fittings Use Brass Inserts Instead of Plastic Threads?
PPR fittings use brass inserts because plastic threads wear and strip under load. How inserts are anchored, which threads they carry and what to specify.
Brass Inserts for Plastic: How to Write an RFQ
How to write a brass insert RFQ: the drawing, thread, knurl, grade, plastic and delivery details suppliers need to quote you accurately.
Is CW617N Brass Lead-Free? What Insert Buyers Need to Know
No, CW617N is a leaded brass (CuZn40Pb2). See how US, EU and German rules define lead-free and what to specify when sourcing brass inserts.
304 vs 316 Stainless Steel Inserts for Potable Water Systems
304 or 316 stainless steel inserts for water fittings? Compare molybdenum, chloride and chlorine limits, hot-water risks and what to specify when sourcing.
What Is the Difference Between CW617N and CW602N Brass?
CW617N is a leaded forging brass; CW602N adds arsenic and heat treatment for dezincification resistance. Neither is lead-free. How to specify each.