plug seat

基本解释

The main reason is (1) Plug and seat stick, can be done manually to exclude the exhaust test;
主要原因是（1）閥芯與閥座粘住，可做手動排氣試騐排除；
The unique ram-style plug & seat provide reliable, tight shut off. All HST valves are covered by a 36 month prorated warranty.
獨特的柱塞式設計，小巧、方便，所有止流閥均有36個月的保脩期。
www.e-gtm.com.cn
The utility model discloses a voltage-regulating and energy-saving plug seat for domestic appliances, having the advantages of convenient operation, high efficiency and energy saving.
本實用新型爲家用電器提供一種調壓節能、使用方便的插頭座。
ip.com