跳转至内容

概述

RVA 截止止回阀

GEA check valves open autonomously by the pressure that is exerted by the working medium upon the valve disc. They start to open at a differential pressure of 0.01 to 0.05 bar and are fully open between 0.1 and 0.2 bar. As soon as the flow is interrupted or the flow direction is reversed, the valve closes automatically. Additionally, RVA stop check valves may also be closed manually with a handwheel or a ratchet attached to the lifting stem. Rotating the stem clockwise will keep the valve disc down on the valve seat and therefore keeps the valve closed, counter-clockwise rotation will enable the valve disc to be opened by the pressure of the medium. The built-in damping device makes this type of valve especially suitable in cases where the power requirement / flow rate fluctuates. GEA stop check valves are designed for installation in industrial heating and refrigeration systems. They are installed on either the pressure or suction side of compressors or in pipes in which only one direction of flow is intended. The stem sealing is provided by a threaded bush with spring-elastic PTFE ring.

GEA AWP RVA Stop Check Valve

Stop Check Valve type RVA

Downloads

GEA 洞察

GEA center of excellence on olive oil

增强橄榄油行业的韧性

了解 GEA 如何在气候变化时期支持橄榄油行业,并通过创新技术可持续地提高生产商的盈利能力。

homestyle chicken produced on gea cookstar

驾驭工业烹饪:化繁为控

工业烹饪并不一定非得很复杂。探索能够提升控制力、一致性、效率和产品质量的策略与技术。

The water equation | Keyvisual

水波方程

在整个欧洲,干旱已成为一种反复出现的现实 – 且不再局限于南部地区。尽管水正日益成为影响工业选址的因素,但其价值取决于当地的具体情况。在工业流程中,有许多实现节水的技术途径,但地理位置、能源需求及其他因素同样至关重要。

接收 GEA 新闻

订阅 GEA 的新闻,掌握 GEA 的创新信息和故事。

联系我们

我们随时为您提供帮助!您只需提供少量详细信息,我们就能回复您的查询。