Columbia | Upright Boiler Handhole Plate Assemblies In Stock

Item Name: Columbia Handhole Assemblies
Description: has the solution for your handhole and manhole plate needs. Many of the popular sizes are listed below, but if you do not see the size you need, call us and we can get it!


We carry both clip and stud style plates, which come with a neoprene handhole gasket with every plate. Stainless steel plates are available too!


All handhole and manhole plates listed are flat coded plates with the exception of the 11 x 15 which also has a non-coded version. Non-Code manhole assemblies have been proof tested to 600 PSI. These lightweight, single bolt and crab manholes have been designed for use in Non-Code vessels of low pressure, requiring frequent inspection and/or cleaning. Pressures should not exceed 15 PSI working pressure.


2 3/4 x 3 1/2 OB Cast plate only - #34A flat LBS 3 x 3 3/4 OB Cast plate only - #36B curved LBS Yoke, cast, 2 prong #32A for 34A plate Yoke, cast, 2 prong #38A for 36B plate Stud, nut & washer Gasket - either plate Plate complete - either


We offer stock of original Columbia Boiler Handhole Plates, are obround, cast iron, with a loose bolt (slide type). Elliptical plates have also been used by Columbia Boiler. We have an OSCO Forged Steel Replacement Plate for those applications.

Shipping Time: 1-3 Business Day
Columbia Handhole Assemblies (Less Ring)
Part # Size Type & Style Curved Radius
PHH5C 2-3/4 X 3-1/2 Obround / Flat 34A 5.00 Add to RFQ
PHH6C 3 X 3-3/4 Obround / Curved 36B 5.00 Add to RFQ
Other Recommended Products: