American standard flange gate valve (copper)

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American standard flange gate valve (copper)

Overview:

The American standard flange gate valve (copper) is a type of gate valve that conforms to American standards (such as ANSI/ASME B16.1, B16.34, etc.), uses copper and copper alloy as the core valve body material, and is installed through flange connection. It is mainly used to control the on-off of liquids (such as water, oil, weakly corrosive solutions, etc.). It is a common cut-off valve in industrial pipeline systems, especially suitable for medium and low pressure scenarios that have certain requirements for material corrosion resistance and sealing reliability.

Pressure level: Class 150 (PN2.0MPa), Class 300 (PN5.0MPa)

Nominal caliber: NPS 1/2 (DN15) ~ NPS 12 (DN300)

Medium characteristics: water, oil, weak acid and alkali

Temperature range: - 20℃~120℃

Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

Precautions for use and maintenance

Opening and closing operation: It is strictly forbidden to "open and close suddenly". During manual operation, you need to slowly turn the handwheel to avoid collision between the gate and the valve seat; the open rod gate valve needs to record the opening and closing stroke to avoid excessive opening and closing causing damage to the stem.

Media cleaning: Before installation, it is necessary to clean up the impurities in the pipe (such as welding slag and rust). You can install a filter in front of the valve to prevent the impurities from scratching the sealing surface.

Regular maintenance: Check whether the valve stem seal (filler letter) is leaking every 3 to 6 months. If there is leakage, it is necessary to tighten the packing cover or replace the packing (such as graphite packing and tetrafluoroethylene packing); after long-term deactivation, before opening, you need to turn the handwheel to lubricate the stem thread to avoid jamming.

Corrosion protection: If used in a humid or outdoor environment, it is necessary to regularly coat the valve body flange, handwheel and other parts with anti-rust paint (the copper valve body itself is rust-proof, but the connecting bolts and handwheels may be made of carbon steel).