Brass ball valves, like all ball valves, control fluid flow by rotating a bored spherical ball to block or open the fluid path. They are available in 2- 3- or 4-way designs and have a variety of end connections. The primary components of Brass Valve are copper and zinc. The ratio of these vary depending on the desired mechanical properties, and additional elements such as tin, iron and lead are sometimes added to further improve certain properties. Of these additional elements, lead is the most common additive as it improves machine-ability. Lead has a lower melting point than zinc, so it is the last element in the alloy to solidify. It therefore squeezes into casting pores where it acts as a sealing agent and aids in machining by acting as a microscopic chip breaker and tool lubricant.
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fariz ANSARI 14 days ago
알리익스프레스에서 할인을 받으려면 프로모션 코드 또는 쿠폰을 사용해야 합니다. 네이버페이로 결제 시 즉시 할인을 받을 수 있는 이벤트가 진행 중이며, 알리 할인코드 첫 결제 시 할인 코드
Johnstontr Johnstontr 14 days ago
트립닷컴은 3~6%의 할인 코드가 주로 나옵니다. 트립닷컴 할인코드 그냥 보기에 할인율이 낮아보이지만, 다른 웹사이트들과는 다르게 체인호텔들에도 할인코드가 적용되기 때문에
fariz ANSARI 14 days ago
호빠 는 호스트바의 줄임말로 속칭 호빠라고 부르는 경우가 일반적이다. 남성 접대부를 고용하는 가게 호스트바 남성접대부를 통칭하여 이르는 말
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