JPS5819173U - relief valve - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は従来例を示す断面図、第３図は本考案
の実施例を示す断面図である。 ３は１次ポート、４．５はド【／ンポート、６はスプー
ル、７は受圧室、８は通路、９は弁座、１０はボール、
１２はオリフィス。1 and 2 are sectional views showing a conventional example, and FIG. 3 is a sectional view showing an embodiment of the present invention. 3 is the primary port, 4.5 is the don port, 6 is the spool, 7 is the pressure receiving chamber, 8 is the passage, 9 is the valve seat, 10 is the ball,
12 is the orifice.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] １次ポート３に連通ずる受圧室７の圧力によりスプール
６をばねに抗して移動して１次ポート３とドレンポート
４，５とを連通ずるようにしたリリーフ弁において、受
圧室７内に、通路８にて１次ポート３に連通する弁座９
を設け、この弁座９に閉じ方向にばね付勢してボール１
０を当接し、また受圧室７に１次ポート３に連通ずるオ
リフィス１２を設けてなることを特徴とするリリーフ弁
。In the relief valve, the spool 6 is moved against a spring by the pressure of the pressure receiving chamber 7 communicating with the primary port 3, and the primary port 3 and the drain ports 4, 5 are communicated with each other. , a valve seat 9 communicating with the primary port 3 through a passage 8
is provided, and the valve seat 9 is biased by a spring in the closing direction to open the ball 1.
A relief valve characterized in that an orifice 12 is provided in a pressure receiving chamber 7 and communicated with a primary port 3.