Do transportu jakich substancji należ stosować antystatyczne węże teflonowe?

Do substancji wymagających zastosowania antystatycznego węży teflonowych należą m.in. rozpuszczalniki organiczne (aceton, toluen, ksylen), alkohole, paliwa (samochodowe, lotnicze, olej opałowy), substancje stałe w postaci proszków i pyłu, para wodna. Nie wymagają zastosowania antystatycznych węży teflonowych substancje takie jak produkty nieorganiczne (sole, kwasy, zasady), niektóre alkohole, glikol, woda, czyste, suche gazy, sucha para wodna o wysokiej [...]

2022-01-07T10:46:15+01:00

Which valves can be used for abrasive materials?

Diaphragm valves (pneumatic, mechanical), or butterfly valves are commonly used for abrasive media such as gravel, sand, cement, limestone grit. The type of elastomer used for the sleeve or cuff is important in these two types of valves. Natural rubber, SBR, or HNBR have higher abrasion resistance.

2023-08-21T15:44:37+02:00

Which valves are used for steam?

If valves are to be used for steam, their seals must be resistant to high temperature. Graphite filled PTFE (up to +260°C), or stainless steel reinforced PTFE (up to +260°C), are the most common materials for ball valve seats. PEEK also has good resistance to high temperatures and is used for ball valve seats intended [...]

2023-08-21T15:44:10+02:00

Which valves are used for oxygen?

The valves designed for oxygen service, which are degreased at the production stage and properly secured by the manufacturer, until installation in oxygen pipelines, can only be used in oxygen systems. The installation process needs to be performed with due cleanliness, as lubricants can self-ignite in a pure oxygen atmosphere.

2023-08-21T15:43:26+02:00

Which valves can be used for natural gas?

Valves for natural gas installations for buildings should comply with EN 331 standard. In Poland, the valves with a maximum operating pressure up to 20 bar are to be used for these applications (designation MOP5-20), for continuous operation under normal operating conditions.

2023-08-21T15:42:58+02:00

Which valves should be used for hazardous areas?

ATEX Directive 2014/34/EU (Article 2, §1) and ATEX Guide (§38) specify that equipment and simple pipe components, such as manual valves, check valves, mesh filters, pressure regulators, safety valves, are not covered by the directive, as they do not have their own potential source of ignition. Therefore, these components do not require certification to be [...]

2023-08-21T15:42:24+02:00

How to install a valve with weld-in ends?

Weld a two-piece valve (with extended connections) directly into the piping system, taking care not to overheat the valve (seal may get damaged), by cooling the valve during welding. A three-piece valve is first pre-assembled between the connections (tack weld), and the connections are welded after the body with seals is removed. After the connections [...]

2023-08-21T15:40:43+02:00
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