Excess flow shutoff valve comprising a valve body, a valve plug, a partition, and an activation component where the valve plug, the partition, and activation component are disposed within the valve body. A suitable flow restriction is provided to create a pressure difference between the upstream...
The Model 128 can be employed anywhere excessive flow rates must be positively prevented. It is particularly useful as a protective device against downstream line rupture. MODEL FEATURES: Valve trips closed when predetermined flow rate is detected Built-in orifice plate for sensing flow rate Valve ...
Excess flow shutoff valve for hazardous fluids A shutoff valve installed on the discharge side of a pump to automatically shutoff hazardous liquid flow in the event of a rupture on the downstream side of the shutoff valve. The shutoff valve operates in response to a predetermined pre... ...
专利名称:Excess flow shut-off valve 发明人:Jimmy D. Cain 申请号:US0970754 2 申请日:20001107 公开号:US064 0174 1B 1 公开日:20020611 专利附图: 摘要:An excess flow shut-off valve has a body with a flow passageway therethrough. A closure ball is rotatably supported within the body and ...
A shutoff valve installed on the discharge side of a pump to automatically shutoff hazardous liquid flow in the event of a rupture on the downstream side of the shutoff valve. The shutoff valve operat
Water systems that serve critical fixtures and require uninterrupted water service should be designed with the added security of the Excess Pressure Safety Shut-Off Valve. Careful review of the system flow requirements, and need for PRV redundancy, should be considered when determining the optimum PRV...
A poppet type excess flow valve comprises a body forming a valve chamber having a first portion of a first diameter adjacent a first end and a second portion of a second smaller diameter adjacent second end. A valve seat is located between the first and second portions of the valve chamber...
The M-VF Series excess flow valve operates with all liquids or gases. These excess flow valves are engineered for fast, automatic shut-off in case of line, hose, or fitting failure, protecting plant, personnel & instruments.
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The present check valve substantially restricts fluid flow to a direction from the inside of the boot to the environment, while preventing backflow. The present invention allows excess water to be expelled from the boot to prevent ... DARREN WASSERMAN 被引量: 3发表: 2011年 ...