Valve Accessories
For when valves are installed in areas of limited accessibility. Our valve accessories are strong, versatile and can be fabricated to suit specific site requirements.
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Valve Accessory FAQs
What is a flange on a valve?
A flange is a lip/rim/edge that extends past a piece of equipment (such as a valve inlet or outlet) and provides a strong base with which to safely attach other fittings, such as pipes and pumps.
Flanges can sit either externally or internally on the respective equipment depending on factors such as space restrictions. A fluid-tight seal is formed by placing gaskets between the two flanged surfaces to prevent leaks, secured by bolts and washers.
For more information on valve flagging, read our How-to Guide: Valve Flanges, Bolts & Tightening.
What is jointing?
Jointing is the process of connecting two components to create a leak-tight seal - such as flanged joints used on pipe and valve ends. T-T Flow stocks a range of PN16 joint set kits, including galvanised bolts, nuts, washers, and and EPDM gasket for each f; and joint.
What are male and female flanges?
Male and female flanges are designed to be used together in order to ensure a secure connection between two fittings.
Male flange faces have raised sections and female flange faces have grooves/depressions that match, allowing for more precise sealing.
What is BS EN 1092?
BS EN (British Standard, European Norm) 1092 is a specification of requirements held in Europe regardings flanges and joints for safe use in various industries.
BS EN 1092 covers pressure tolerances, temperature ratings, surfaces finishes, flange surface finishes and more - these standardisations aim to ensure consistence and quality in the design and manufacture of flanges, promoting safety and ease of use across different applications.
What are valve T-Keys?
T-Keys are a type of manual valve operating equipment, named after its shape with a vertical stem and horizontal crossbar/handle.
T-Keys attach to a valve's stem (typically square or rectangular) and are generally used to open and close valves that are installed below ground. This remote operation prevents operators from having to enter into confined or otherwise hazardous spaces in order to adjust the valve.
What is an extension spindle?
T-Keys and extension spindles are similar in that they allow for remote operation of a valve without the need for entry into a hazardous location. However, extension spindles are an extension of a valve's handle or handwheel rather than the valve stem (which a T-Key connects to for remote operation).
Extension spindles are used to add length to a valve's operating component, allowing for remote operation that bypasses the need for operators to enter into dangerous areas in underground or confined spaces.