FIELD: machine building.
SUBSTANCE: invention is related to machine building industry, in particular to valve building, and is intended for closure of reverse medium flow in pipelines. Check lock comprises body embraced by pins with nuts, which connect inlet and outlet flanges, seat that is tightly fixed closer to inlet flange and hingedly joined to plate. Shell is tightly fixed in body to circular rib. Seat is installed in it internal cavity. Circular groove is arranged along external surface of seat. Groove is arranged from it in axial plane to the side of outlet flange. Lug for plate fixation is arranged in mentioned circular groove and slot.
EFFECT: increased extent of lock repairability.
3 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SWING-CHECK GATE | 2008 |
|
RU2410592C2 |
| REVERSE SHATTER | 2017 |
|
RU2660986C1 |
| NON-RETURN VALVE | 2020 |
|
RU2749057C1 |
| ROTATABLE CHECK VALVE | 2005 |
|
RU2295085C2 |
| MULTIFUNCTION PIPE FITTING ASSEMBLY | 2009 |
|
RU2451855C2 |
| CHECK VALVE | 2004 |
|
RU2300686C2 |
| BIO-SHELL CASE FOR PIPELINE ACCESSORIES | 2009 |
|
RU2409786C1 |
| CHECK VALVE | 2005 |
|
RU2300684C2 |
| LOCKING UNIT OF PIPELINE FITTING WITH CHANGEABLE SEALING RINGS | 2006 |
|
RU2315219C2 |
| WEDGE VALVE WITH SELF-ADJUSTING SEATS | 2008 |
|
RU2378548C1 |
