Wolverine Brand Steel Inflow Protector Manhole Inserts Scroll down for complete product details.
	Quantity in Basket: None Code: STMHIFP (Varies by Size - Select Item Below to Update Price) Shipping Weight: 15.00 pounds
	A - Manhole Dimensions : B - Drop Ring Depth : OD - Manhole Frame Diameter : ID - Inside Frame Diameter : Select Size Range : 21" to 25-3/4" ($250) 27" to 34" ($325)
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Wolverine Brand® Steel Inflow Protector Manhole Inserts Steel Inflow Protector Data Sheet Measurement Sheet Wolverine Brand® Stainless Steel Inflow Protector Manhole Inserts are manufactured of 16 gauge 304 stainless steel. Gasket The gasket is manufactured from a closed cell neoprene material and is attached by a pressure sensitive adhesive, to the weight-bearing surface of the dish. A gasket manufactured from a cross-linked polyethylene material is also available. Removal The Wolverine Brand® Stainless Steel Inflow Protector Manhole Inserts  have a corrosion resistant polypropylene strap installed for easy removal and re-installation into the manhole frame. One corrosion resistant Stainless Steel U-Bolt or one Plastic Coated Stainless Steel handle pop riveted to the insert with a #6 high grade Stainless Steel rivet are also available. Venting The ventilation system utilizes one valve manufactured of a Polypropylene Ethylene compound. The valve material is unaffected by temperature within a range of -70°F to 350°F. The valve body and components are corrosion and wear resistant, designed to release gas pressure at a minimum of 1 psi, and have a water leak-down rate no greater than 5 gallons per 24 hours. INSTALLATION: No special tools are required. NOTE: For proper operation it is imperative that the manhole rim be cleaned of all dirt and debris before placing theWolverine Brand® Stainless Steel Inflow Protector Manhole Insert upon the rim.  Ensure the insert is fully seated around the manhole frame rim and reinstall the manhole cover as it was before.