CHECK VALVE IN DRAIN TRAP

• Main Author: HARA KAZUYA
• Format: Patent
• Language: English; Japanese
• Published: 27.05.2021
• Subjects: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; FIXED CONSTRUCTIONS; SEWERAGE; SINKS; WATER SUPPLY

To provide a check valve to be used in a drain trap that can reliably perform the backflow prevention function by bringing the valve into contact with the seat without generation of a gap between the valve and the seat.SOLUTION: A check valve to be used in a drain trap comprises: a valve body 11 which is the main body that functions as a valve; and a valve seat 12 that is the outer frame of the valve. The surfaces that abut the valve body 11 and the valve seat 12 are formed as inclined surfaces so that the inclined surfaces contact each other, and the inclined surface to be abutted is formed on the valve body 11 side as a valve outer inclined surface 14 on the outside of a valve body side portion 13, and is formed on the valve seat 12 side as a valve seat inner inclined surface 15 inside the valve seat 12.SELECTED DRAWING: Figure 5 【課題】 弁と弁座との間に隙間を生じさせることなく当接させて、確実に逆流防止機能を奏することができる排水トラップにおける逆流防止弁を提供する。【解決手段】 弁として機能する本体部である弁本体１１と、弁の外枠となる弁座１２とを備え、弁本体１１と弁座１２との当接する面がそれぞれ傾斜面に形成され、傾斜面同士が当接するように行為され、当接する傾斜面が、弁本体１１側では弁本体側部１３の外側に弁外側傾斜面１４として形成され、弁座１２側では弁座１２の内側に弁座内側傾斜面１５として形成されていることを特徴とする。【選択図】図５