What is AWWA C504?
AWWA C 504 design based travelling nut gear operator can be mounted on all valves sizes both for above and underground service. For Gear Box to be used above ground, a hand wheel and visual position indicator can be provided. Chainwheel with 2” Square Nut is also available as an option.
What is AWWA butterfly valve?
DeZURIK AWWA Butterfly Valves meet the requirements of AWWA C504 and C516 standards. They are used for shutoff on clean water and gases. Offset disc design, corrosion resistant shaft, stainless steel disc edge, and self-compensating shaft seals are features on all DeZURIK AWWA valves.
How do you size a butterfly valve?
How to Determine Butterfly Valve Dimensions
- Length A – Length of butterfly valve body + stem endpoint.
- Length B – Length from centerline x-axis to valve end.
- Length C – thickness of the valve body.
- Length F – length of the key.
- Length H – diameter of stem.
- Length J – Hole size.
- K – thread size.
- L – number of holes.
What type of valve is a butterfly valve?
The butterfly valve is classified as a quarter-turn valve. It works like a ball valve for quick shutoff, but unlike a ball valve, the butterfly valve can also open and close incrementally. This difference means that the disc is always present in the flow and allows for a drop in pressure.
What is api609?
API 609 is the American design standard forbutterfly valves, which is divided into Category A and B. Also known as rubber lined butterfly valves. These are popular in low pressure systems (Class 150 or less), relatively lower cycle life, rubber liners are also good for abrasive slurry services.
How much does a 24 butterfly valve weight?
The weight of the butterfly valve is related to the butterfly valve form and material.
| DN | INCH | Weight kg |
|---|---|---|
| DN400 | 16” | 62.0 |
| DN450 | 18” | 95 |
| DN500 | 20” | 120 |
| DN600 | 24” | 170 |
What is wafer butterfly valve?
The wafer style butterfly valve is designed to maintain a seal against bi-directional pressure differential to prevent any backflow in systems designed for unidirectional flow.
How do I choose a butterfly valve?
Factors to Consider When Choosing Butterfly Valves
- Wafer lug or grooved end connections.
- Press-to-connect ends selection.
- Broad range of sizes.
- Lug or wafer types.
- Ductile iron, cast iron, CPVC materials.
- Lead-free* selection.
- Fire protection selection.
- High performance selection.
How do you measure valve size?
Another crucial, but easy to measure dimension is the valve’s overall length. By simply measuring from the tip of the valvestem to the face of the valve with a set of calipers, you can get the valve’s overall length.
Is standard for butterfly valve?
IS 13095: Butterfly valves for general purposes.
What is Category B butterfly valves?
Category B valves are “offset” type, meaning the shaft is offset from the disc, so they can handle higher differential pressures. Most of the offset types cause the disc to rotate freely from the seat after a few degrees of rotation, which minimizes seat wear and increases valve cycle life.