The plug, including plug bearing surfaces (trunnions), are one solid casting.
No bolted-on parts that can come loose.
Bearings are heavy duty corrosion resistant 316 stainless steel.
On sizes 42" and larger, aluminum bronze body bearings provide exceptional contact surfaces for the 316 bearings on the plug journals, prolonging bearing life.
How to Specify
- Plugs shall be solid one piece, Cast Iron ASTM A126 Class B or Ductile Iron ASTM 536 Grade 65-45-12.
- Bearings shall be sleeve type and made of sintered, oil impregnated permanently lubricated type 316 stainless steel, ASTM A743 Grade CF8M through 36" (900mm). In valve sizes 42" (1100mm), the upper and lower plug journals shall be fitted with ASTM A240 type 316 stainless sleeves with body bearings of ASTM B30, Alloy C95400 aluminum bronze