Buy Gate Valves

gate valves
A valve with a sliding part that controls the extent of the aperture
(Gate valve) A gate valve, also known as a sluice valve, is a valve that opens by lifting a round or rectangular gate/wedge out of the path of the fluid.
(Gate valve) A valve with a circular-shaped closing element that fits securely over an opening through which water flows. A valve that utilizes a disc moving at a right angle to the flow to regulate the rate of flow. When a gate valve is fully opened, there is no obstruction to the flow.
(GATE VALVE) A two-way valve that may be opened or closed to block the flow of fluid in a passage. Normally manually operated, but may be automated, especially for larger sizes.

buy
Procure the loyalty and support of (someone) by bribery
Obtain in exchange for payment
Pay someone to give up an ownership, interest, or share
bribe: make illegal payments to in exchange for favors or influence; "This judge can be bought"
obtain by purchase; acquire by means of a financial transaction; "The family purchased a new car"; "The conglomerate acquired a new company"; "She buys for the big department store"
bargain: an advantageous purchase; "she got a bargain at the auction"; "the stock was a real buy at that price"