1.
dual way check valve
双向止回阀（双通单向阀）
2.
Seat discs shall be reversible to extend check valve life.
阀座阀瓣应该是双向的，能够延长止回阀寿命。
3.
Check Valve 1;Check Valve 2;Check Valve 3;Screw-down
止回阀 1;止回阀 2;止回阀 3;旋拧阀
4.
Check valves or as a one-way valve. For the hydraulic system to prevent reverse flow of oil flow.
单向阀又称止回阀或逆止阀。用于液压系统中防止油流反向流动。
5.
Globe pattern stop-check valves can be used in horizontal piperuns with the stem straight up.
截止阀类型的节流止回阀可以用在水平管道上，阀杆垂直向上。
6.
ball check valve
球形止回阀（附有球阀和阀座的阀门,液体只能单方向通过）
7.
Type of valve- gate, globe, check, etc.
阀门种类：闸阀，截止阀，止回阀，蝶阀，球阀，等等。
8.
Purpose: To test check valves for tightness in the direction of flow.
目的：检测止回阀在流向上的紧固性。
9.
check-valve mounting bracket
止回阀(装置)托架
10.
Holding the cage in one hand, push the seat inward and rotate counterclock-wise against the cage.
用一只手握住止回笼，向内推阀座，面对止回笼反时针方向旋转。
11.
Series774 Double Check Valve Assemblies are designed to prevent the reverse flow of polluted water from entering into the potable water system.
系列747双止回阀总成用于防止污水回流进入饮用水系统中。
12.
Series774 XDCDA Double Check Detector Assemblies are designed to prevent the reverse flow of polluted water from entering the potable water supply.
系列747XDCDA双止回阀检测器总成用于防止污水回流进入饮用水系统中。
13.
Double-door check valves have twin discs on a spring-loaded center shaft.
双门止回阀在弹簧中心轴旁配置两个对称的阀瓣。
14.
Now bring the check assembly through the check retaining wall.
现在将止回阀通过止回阀护壁取出。
15.
This is a gate valve (check valve, butterfly valve, cut-off valve, magnetic valve, remote valve, relief valve, throttle valve, cock).
这是一个闸阀（止回阀、蝶阀、切断阀、电磁阀、遥控阀、安全阀、节流阀、旋塞）。
16.
Check valves must be installed with the inlet in the direction of arrow.
必须按照箭头所指方向安装止回阀的进口。
17.
The user installs a dual check backflow preventer at the water meter as prescribed by the supplier of safe drinking water.
用户要由安全饮用水供应商在水表处安装法定的双止回防回流阀。
18.
Pacific Valves' unique injector has a double ball check protection against leakage and a positive shut-off internal valve.
美国太平洋阀门独特的注入器具有双球止回保护，防止泄露，并保护阀门内部活动部件。