JPS5540354A - Seal ring for ball valve - Google Patents

Seal ring for ball valve

Info

Publication number
JPS5540354A
JPS5540354A JP11357078A JP11357078A JPS5540354A JP S5540354 A JPS5540354 A JP S5540354A JP 11357078 A JP11357078 A JP 11357078A JP 11357078 A JP11357078 A JP 11357078A JP S5540354 A JPS5540354 A JP S5540354A
Authority
JP
Japan
Prior art keywords
frictional
ring
seal
seal ring
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP11357078A
Other languages
Japanese (ja)
Inventor
Morimichi Shinohara
Tetsuya Teramoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11357078A priority Critical patent/JPS5540354A/en
Publication of JPS5540354A publication Critical patent/JPS5540354A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To reduce waer of the seal case and permit smooth operation of the seal ring by providing frictional rings on the surface of a seal ring in contact with a seal case.
CONSTITUTION: Frictional rings 21 made on a soft non-ferrous material having a low coefficient of friction, for instance gun metal, are secured to a seal ring 20 at opposite edges thereof. A frictional member 31 made of a hard material such as stainless steel is secured by means of fusion to the inner surface of a seal case 5 in contact with packings 23. When the seal surface C is brought into close contact with the movement of the seal ring 20 caused by applying water pressure P2 for cutting water flow W, smooth relative movement of the frictional member 31 and frictional ring 21 is caused. Even when the corner of the frictional ring 21 touches the frictional member 31, the corner is worn only slightly. Gaps G2 and G3 are smaller than gaps G1, G4 and G5, so that the opposite edges of the frictional ring 21 is always in contact with the frictional member 31.
COPYRIGHT: (C)1980,JPO&Japio
JP11357078A 1978-09-18 1978-09-18 Seal ring for ball valve Pending JPS5540354A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11357078A JPS5540354A (en) 1978-09-18 1978-09-18 Seal ring for ball valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11357078A JPS5540354A (en) 1978-09-18 1978-09-18 Seal ring for ball valve

Publications (1)

Publication Number Publication Date
JPS5540354A true JPS5540354A (en) 1980-03-21

Family

ID=14615587

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11357078A Pending JPS5540354A (en) 1978-09-18 1978-09-18 Seal ring for ball valve

Country Status (1)

Country Link
JP (1) JPS5540354A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58102632A (en) * 1981-12-16 1983-06-18 Toshiba Seiki Kk Manufacture of intermittent driving apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58102632A (en) * 1981-12-16 1983-06-18 Toshiba Seiki Kk Manufacture of intermittent driving apparatus

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