Butterfly valve specification

Is butterfly valve the same as pressure reducing valve? What is a gas butterfly valve? Cast Iron Pipe Flanges and Flanged Fittings.

Valve tag numbers and technical descriptions are included in Appendices to 5. This specification shall be used in conjunction with the relevant project specifications and data sheets. Ductile Iron is the only body material we offer, allowing our Lug style butterfly valve to be full rated for bi-directional dead end service.

Specifications and Applications. An EPDM seated butterfly valve shall not be used for all oil applications. 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. There are two types of valve bodies, the lug type and the wafer type.

The lug body has protruding legs that provide bolt holes matching those in the pipe flange. The butterfly valve has been in use since the late 18th century. James Watt used a butterfly valve in his steam engine prototypes.

With advances in material manufacturing and technology, butterfly valves could be made smaller and withstand more-extreme temperatures.

To make your selection easier, NIBCO offers specification and submittal assistance. You also get the assurance of the NIBCO warranty, along with superior customer service expertise. Component parts of the butterfly valves shall be in accordance with AWWA C504. Butterfly valve body types. To see availability for this product, Create an Account.

About of these are Pumps. A wide variety of butterfly valve specification options are available to you, such as pressure, usage, and power. TYPE OF BUTTERFLY VALVE a) Double Flange - for connection to pipe flanges by individual bolting.

SPECIFICATION FOR BUTTERFLY VALVE 1. Epoxy powder coated body o Blow out proof Stainless steel stem. This International Standard specifies requirements and gives recommendations for the design. A butterfly valve is used to shut off or modulate the flow of a fluid (isolation and regulation). API 6Centric butterfly valves (soft seated) are preferred to gate and ball valves for low-pressure and non-critical applications as they are cheaper, lighter and easier to install. Clow’s design with the EPDM seat located on the vane and mating with a 3Stainless Steel Body Ring is time proven, and it assures 1percent bubble-tight sealing for the life of the valve.

Nominal flow rate of cold water (5…°C) through the fully open butterfly valve by a differential pressure of 1kPa (bar) ASK46. Lockable level with fixed stops at and 90° as well as precision positioning in 6° increments. Fluorine lined resists chemical attack from most known chemical compounds, and with a flexible liner design ultilizing a full width, 3degree, resilient back up liner offers bubble tight shut off in even the most demanding installations. Designed specifically for the waterworks industry, Lineseal butterfly valves offer the ruggedness and reliability required for buried service and performance.

Lower head loss means getting the most from your pumping station dollar.

Lower torques mean less costly actuation packages, and the maintenance-free design helps keep your budget under.