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.
Cut away view of gate valve | Knife gate valve | Gate valve body. Image Credit: Cameron | KSB | Hebei Tongchan. Gate valves (also known as knife valves or slide valves) are linear motion valves in which a flat closure element slides into the flow stream to provide shut-off. They are one of the most common valves used.he trim of a gate valve contains the functioning pieces of the valve: the stem, the gate, the disc or wedge, and the seat rings. Stem-The stem of a gate valve is either a rising stem or a nonrising stem. The stem is responsible for the proper positioning of the disk.