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US 2007/0164247 A1Published application
Valve device
AssigneeYamatake Corporation
InventorsSatoshi Yuzawa, Shousaku Makabe, Kyoko Kojo
Life of this patent
Estimating the term…
Abstract
A valve device includes: a valve stem 4 vertically movably inserted in a staffing box 1; a gland packing 2 interposed between the staffing box 1 and the valve stem 4; a packing flange 9 disposed above the gland packing 2 through a packing follower 3; a spring case 6 that accommodates or holds Belleville springs 5, further abuts the packing flange 9 on its top face, and has groove portions 12 on its peripheral wall; and stud bolts 7 that press the gland packing 2 through the packing flange 9 and the spring case 6.
Claims6
A valve device comprising:
- a valve stem which is vertically movably inserted in a packing-accommodating means;
- a gland packing interposed between the packing-accommodating means and the valve stem;
- a packing flange which has a valve-stem accommodating hole provided at the center thereof and tightening-member accommodating holes provided around the periphery of this valve-stem accommodating hole, and which is disposed above the gland packing through a packing-pressing means;
- a spring member having a valve-stem accommodating hole at the center thereof;
- a spring case which has a valve-stem accommodating hole provided at the center thereof, and tightening-member accommodating grooves and windows that are provided on the peripheral wall thereof, accommodates or holds said at least one or more spring members in the bottom opening of the valve-stem accommodating hole, and which abuts the packing flange on the top closure thereof around the periphery of the valve-stem accommodating hole;
- and
- a plurality of tightening members pressing the gland packing through the spring member, the spring case, and the packing flange.
4 more elements
A valve device comprising:
- a valve stem which is vertically movably inserted in a packing-accommodating means;
- a gland packing interposed between the packing-accommodating means and the valve stem;
- a spring member having a valve-stem accommodating hole at the center thereof;
- a packing flange which has a valve-stem accommodating hole provided at the center thereof and tightening-member accommodating holes provided around the periphery of this valve-stem accommodating hole, accommodates or holds said at least one or more spring members in the bottom opening of the valve-stem accommodating hole, and which is disposed above the gland packing through a packing-pressing means;
- and
- a plurality of tightening members pressing the gland packing through the spring member and the packing flange.
3 more elements
Dependencies are inferred from the claim text.