FIELD: mining. SUBSTANCE: cylindrical recess of valve casing accommodates a spring-actuated cut-off member. Passages extend through the length of the recess. End of adjusting screw at the side of the spring has S-shaped bevel with vertex of the bevel angle facing outlet pipe. EFFECT: improved design, increased reliability. 2 cl, 5 dwg
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Authors
Dates
1994-05-30—Published
1988-10-20—Filed