Use a pressure reducing regulator or separate control valve to safely discharge gas from cylinders. Use a check valve to prevent reverse flow into the cylinder.
使用减压调整器或单个的控制阀来安全地从钢瓶中排出气体。采用止回阀，防止回流入钢瓶。
Spring-actuated valve to be used on pump discharge. Swing check with outside lever and spring to be used on sump, sewage and storm drain lines.
弹簧执行机构止回阀用于管道排放。外置操作手柄和弹簧执行机构的旋启式止回阀用于污水坑、排污和雨水排泄管道。
Continuous discharge is an indication that the check valve components may require cleaning.
持续排泄表明止回阀部件可能需要清洗。
Continuous discharge is an indication that the check valve components may require cleaning.
持续排泄表明止回阀部件可能需要清洗。
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