Also, here's how to select each option. If you want to sign for a debit card transaction, you generally swipe your card through the reader and choose credit â even though you are authorizing a debit (withdrawal) from your account, not a credit card transaction. To use your PIN instead of signing, select debit..
Series 406-NRS-RW NRS Flanged Gate Valves are used in commercial applications in potable water distribution systems. They feature an epoxy-coated, cast iron body with flanged connections, resilient-wedge disc, stainless steel non-rising stem and cast iron handwheel (or nut and valve key). Series 406-NRS-RW complies with AWWA C509 specifications.
A check valve, clack valve, non-return valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. ball check valve in the open position to allow forward flow and closed position to block reverse flow. A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check valves, the ball is spring-loaded to help keep it shut.