The best replacement for gate valve is ball valve.

The best alternatives to gate valve are rated as following:
★★★★★  ball valve
★★★★  globe valve
★★★★  butterfly valve
★★  stop valve
★  plug valve
★  knife gate valve
★  check valve
  knife gate
  ball
  control valve
  slab gate valve
  butterfly
  gate valve
  isolating valve
  knife valve
  shut off valve
  lever valve
  stop tap
  sluice valve

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Speaking about gate valve, one probably shouldn't forget about tamper switch.

Other search terms related to gate valve and their ratings are:
★★★★★ tamper switch
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gate valve
ball valve
globe valve