Engutil 2 Module 2 Flashcards
part of systems that connect pipe sections together or other component. Fittings are
used to regulate the flow of water in the system.
Pipe Fittings
A short length of pipe having each end threaded on the inside, used
for joining two pipes of the same diameter.
Couple or Coupling-
A short piece of pipe, threaded on the outside (Male Threads) at both ends, used to join
couplings or other fittings.
Nipple
A pipe fitting which is threaded on both the inside and the outside so that it can
be used to connect two pipes (or other fittings) of different sizes
Bushing
A coupling device for connecting two pipes neither of which can be turned,
consisting of two internally threaded end pieces which are tightened around the pipe ends
to be joined, and an externally threaded center piece, which draws the two end pieces
together as it is rotated.
Union
They are used to connect dissimilar pipes. These fittings are somewhat similar to pipe couplings, with the difference that they connect pipe of different types
Adapter
A coupling decreasing in diameter at one end.
Reducer
Parts:
o Thread Piece
o Center Piece
o Shoulder Piece
A pipe flange is a disc, collar or ring that attaches to pipe with the purpose of providing increased support for strength, blocking off a pipeline or implementing the attachment or more items. They are usually welded or screwed to the pipe end and are connected with bolts.
Flange
An externally threaded fitting for closing the end of a pipe.
Plug
An internally threaded fitting for enclosing the end of a pipe.
Cap
A pipe fitting having a bend and makes an angle between adjacent pipes for a change in direction, usually a 90° or 45° angle. When the ends differ in size, it is known as a reducing (or reducer) elbow
Elbow-
A T-shaped pipe fitting for making a three way joint
Tee
a tee having lugs for attachment to a wall or joist.
Drop Tee
a tee having a slight curve in the 90-degree transition to channel the flow from a branch pipe in the direction of the main.
Sanitary Tee
A Y-shaped pipe fitting for joining a branch pipe with a main, usually at a 45 degree angle.
Wye
A pipe fitting for making a four-way connection.
Cross
a cross have a slight curve in each of the 90-degree transitions to channel the flow from branch pipes in the direction of the main.
Sanitary Cross/Double Fixture
any of numerous mechanical devices by which the flow of liquid, or gas started, stopped, or regulated by a movable part that opens, shuts, or partially obstructs one or more ports or passageways.
Valve
functions by the reciprocating action of disc in its body. It can have a single disc (wedge) or double disc. It is used for shut off operation. In double disc valve shut off is good. Gate valve can have rising or non-rising stem
Gate valve
actuated by a stem screw and hand wheel, suited for installation that calls for throttling. Glove valve affords greater resistance to flow than the gate valve because of the change in flow direction.
Globe valve
operates in the same manner as globe valve. It is available in similar range or disc and seat design. Angle valve is used in making 90º turn in a line to reduce the number of joints.
Angle Valve
located at the lower end of the pump used to prevent loss of priming in the pump. It is sometimes called Retention valve.
Foot valve
has a spherical plug. The spherical plug is a controlling element. They are widely used in chemical process industries. It is used where throttling and shut off combination is required. It offers good flow characteristics. Ball valve consists of a two-way globe and the ball rotates between resilient seats. It is compact and requires low maintenance and no lubrication.
Ball valve
the controlling element is a disc called as blade, vane or flapper, which rotates in horizontal or vertical direction and allows the fluid to flow. Butterfly valve is suitable for throttling or on-off operation at low pressure drop.
Butterfly valve
a valve that permits fluid to flow freely in one direction and contains a mechanism to automatically prevent flow in the other direction. It is principally used in industrial piping connections for gas, water, steam, air and other general vapor services.
Check Valve
used on cold water system, heating system, compressed air lines and other pipeline with excessive pressure.
Safety Valve
A tubular section or hollow cylinder, usually but not necessarily if circular cross-section, used mainly to convey substances which can flow.
Pipe
The thickness of the pipe is twice as that of the standard cast iron pipe. Could be used as soil, waste, ventilation and downspout. Superior for embedment in concrete structure for having the same material properties
ASBESTOS PIPE
- One of the oldest plumbing materials used by Egyptians, the Greeks and Roman builders as soil and waste pipe, radioactive wastes. is highly resistant to acid and is suitable for underground installation.
- But because lead is poisonous, it is never used to convey water for human consumption.
Lead Pipe
-Durable and extremely corrosive resistant
Easy to install
-Smooth interior surface
Copper Pipe
known as “Gray Cast Iron”. The most popular and specified material for drainage system.
Suitable for 25 storey building or less.
Cast Iron Soil Pipe (CISP)
Used for well-fitted hub and spigot connection
- Standard Pipe-
the length of pipe needed is more than 150 cm long where cutting is not necessary.
- Single Hub Pipe
pipe is shorter than 150cm long
- Double Hub Pipe
acts as a substitute to standard pipe and does not need caulking of joints anymore. Cheaper and easily connected using a neoprene rubber sleeves.
- Hub less Pipe
A pipe that is made from alloy of cast iron and silicon. This is commonly used in laboratories, industries and other installations where acid wastes are being discharge.
Acid Resistant Cast Iron Pipe-
- for bell-and-spigot cast iron soil pipe (CISP) and other similar joints shall be firmly packed with oakum or hemp and filled with molten pig lead to a depth of not less than 25.4 mm.
Caulked Joint
