Replacement Handhole Parts for York-Shipley Boilers
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Boiler Handhole assemblies consist of five components:
1. Cover Plate
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The handhole cover plate is made from high strength steel and is formed to seal against the inside diameter of your boiler's pressure vessel. The portion that protrudes through the pressure vessel is threaded to allow for installation of a washer and nut.
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2. Gasket
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The handhole gasket is made from pressure and temperature appropriate materials. It is installed between the handhole plate and the inside diameter of your boiler's pressure vessel.
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3. Yoke
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The handhole yoke is made from CNC burned and formed carbon steel. It rests against the outside diameter of your boiler's pressure vessel and allows you to torque the handhole into place, forming a pressure tight seal.
York-Shipley boilers manufactured 2018 and later use a cast handhole yoke
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4 & 5. Handhole Washer & Nut
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During installation, the washer slides over top of the handhole cover plate's threaded stem. The nut is then torqued to draw the handhole cover plate towards the nut, thereby compressing the gasket and forming a liquid and steam tight seal.
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