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spring loaded needle valve 弹簧加载式针阀
Forward needle valve positions for easy access. 针形阀位置提前,便于接近。
Bolt torques control total spring load. 螺栓扭矩控制所有的弹簧负载。
Control supply line water pressure. Install a soft seated, spring loaded, check valve upstream of the assembly. 控制供应管道的水压。在总成的上游安装一个软阀座,弹簧负载止回阀。
The delivery pressure acting on the spring loaded diaphragm throttles the balanced valve to control the pressure. 水输出压力在弹簧负载隔膜的作用下对平衡阀进行节流调节，以控制水压。
Attach vent (yellow) hose to TC#4 and vent needle valve. 连接排气（黄）软管到测试旋塞4号和排气针形阀上。
Open TC#3, needle valve "B ", and vent needle valve. 开启测试旋塞3号，针形阀“B”，和排气针形阀。
Key removable in locked position only. Spring loaded clip-in pawl. 只能在锁住位置时取出钥匙，弹簧加载的嵌入式掣子。
Open TC#2 and needle valve "A", close needle valve "A" and TC #4. 开启测试旋塞2号和针形阀“A”，关闭针形阀“A”和测试旋塞4号。
Close needle valve "A" high side (red) and open test cock No. 2. 关闭针形阀“A”高端（红），并开启测试旋塞2号。
Cushion spring loaded plastic grips.Steel plate spring.Non-bevelled... 电子剪刀产品型号：Electronics ShearGround carbon steel blades.
All needle valves must be closed on test kit. 检测组件上的所有针形阀必须关闭。
Spring loaded for fast closure, eliminating reverse flow slam and water hammer. 负载弹簧用于快速关闭,消除逆流冲击和水锤。
Open vent needle valve and bleed air from hose. Then close vent valve. 开启排气针形阀，并从软管排放空气。然后关闭排气阀。
Open vent needle valve fully until dripping from vent connection stops. 完全开启排气针形阀直到从排气连接处的滴漏停止为止。
EZ twist relief valve cover-quarter turn locking joint captures the spring load during repair to facilitate disassembly. 将安全阀阀盖扭转四分之一转,锁定连接恢复弹簧负载,使得维修期间便于拆解。
Open test cock No. 2 and needle valve "A" high side (red) on test kit. 开启测试旋塞2号和检测组件上的针形阀“A”高端（红）。
The spring load is captured by the two spring retainers and the stem. 通过两个弹簧固定器和阀杆可以恢复弹簧负载。
The FLX-FF4 control check valve is primarily designed for installaton in pump discharge piping where it functions as a spring loaded silent check valve,balancing valve and shut-off valve. FF4控制止回阀在管路中连接在泵的输出端，可以替代泵输出端的消音止回阀、调节阀以及关断阀。
Before starting test all needle valves must be closed. 在开始检测之前,所有阀门都必须关闭。