Check valve
AssigneeTLV Co., Ltd.
InventorHideaki Yumoto
Life of this patent
Estimating the term…
Abstract
An inlet, a valve chest having a diameter larger than that of the inlet, and an outlet are formed in a valve casing. An annular valve seat is formed between the inlet and the valve chest. A valve element for opening and closing the annular valve seat is disposed within the valve chest. A valve stem is projectingly provided on the inlet side of the valve element. A guide member with which an outer periphery of the valve stem comes into sliding contact is provided at inner ends of ribs which project into the valve chest from an inner wall of the inlet. A recess is formed in the valve element to receive therein the ribs projecting to the valve element and also to receive the guide member.
Claims1
A check valve, comprising:
- a valve casing, the valve casing being formed with an inlet, a valve chest having a diameter larger than that of the inlet, and an outlet;
- an annular valve seat formed between the inlet and the valve chest;
- a valve element disposed within the valve chest to open and close the annular valve seat;
- a valve stem projectingly provided on an inlet side of the valve element;
- and
- a guide member with which an outer periphery of the valve stem is in sliding contact, wherein:
- the guide member is provided at inner ends of ribs that project into the valve chest from an inner wall of the inlet, and
- a recess is formed in the valve element to receive therein the ribs projecting into the valve chest and to receive the guide member.
Dependencies are inferred from the claim text.