SPDI WEEK 2

Calculate the water bill of an industrial building with a meter size of 3/4”, which consumed 34 cu. m. of water.

• minimum 1/2” in diameter'

• Galvanized steel or Black steel pipe

Piping outlet for gas appliance

Material type is Type K or L in drawn tube only

-Comes in green or blue color

-surface of copper itself is antimicrobial and can effectively kill the most toxic bacteria, fungi, and viruses.

Medical Gas Tube

Vents suitable only for listed, draft-hood equipped, gas-fired appliances, including most domestic heating and hot water systems.

-factory built double wall vent pipes that are only used to for venting gas

Type B gas vent

For venting listed gas-fired vented wall furnaces or gas-fired vented recessed heaters

Type BW

Use only for positive or negative pressure venting gas appliances producing flue gasses at Class I (up to 245°C) or Class II (up to 135°C) temperatures

Type BH

Designed for venting approved oil-fired and natural-gas appliances that produce draft hood flue gasses that do not exceed a temperature of 570 °F (299°C) or 926 °F for 10 minutes in an over-fire situation

-can be a vent or connect; made to vent oil

-includes pellet vent

Type L

used only as connectors; used only for venting gas or oil

Type C

not less than 16oz. sheet copper, or No. 20 galvanized sheet gauge steel, or of other equivalent noncombustible corrosion resistive material

single-wall metal vents

• often referred to as “Class A chimneys”

• always have a stainless steel interior and a galvanized or stainless steel exterior

Factory-built chimneys

Made of brick or block and require lining for proper safety. Stainless steel liners are preferred.

Masonry Chimneys

Pipe Colors

Pipe colors for gas pipe

a. yellow

b. black

c. Violet

d. Blue

a. yellow

The common pipe material used for in-house water system.

a. BI pipe

b. CI pipe

c. GI pipe

d. AC pipe

c. GI pipe

A red spiral line painted on a pipe section identifies the pipe as______.

a. PPR

b. Wrought Iron Pipe

c. Copper Pipe

d. Asbestos Cement Pipe

b. Wrought Iron Pipe

used to completely close or completely open the line but not to control the flow

Gate Valve

Type of gate valve: a single tapered disc thin at the bottom and thicker at the top

Solid-wedge

Type of gate valve: closes in the same manner as the wedged type; its parallel faces drop in a vertical position and forced apart by the disc spreader.

Double-disc

Type of gate valve: a compact design with body guided, two piece gates that provide reliable operation and sealing.

Split-wedge

Actuated by a stem screw, and hand wheel that calls for throttling;

-much more resistant to flow that gate valve

Globe Valve

3 types of gate valve

1. Solid-wedge

2. Double-disc

3. Split-wedge

3 types of globe valve

1. Conventional disc

2. Plug-type

3. Composition disc

-has a pressure-tight bearing between the disc and the seat recommended for cold water and any temperature service

-commonly used for low pressure water

Conventional disc (ball disc)

wide bearing surface producing good resistance to the cutting effects of scale, dirt and other kind of foreign matter found inside the pipe.

Plug-type

-does not fit into the seat opening, but over it, much as a bottlecap fits over the bottle opening.

-for steam and hot water

Composition disc

Ideal where the valve is used infrequently and the possibility of sticking constitutes a hazard, such as in a fire protection system.

Rising stem with outside screw

Ideal where headroom is limited. They generally are limited to use with gate valves.

Non-rising stem with inside screw

The simplest and most common stem design for gate, globe, and angle valves.

Rising stem with inside screw

The operating threads of the system are outside the valve housing, where they may be lubricated easily and do not come into contact with the fluid flowing through the valve.

Rising stem with outside screw and yoke

Operates in the same manner as the globe valve; used in making 90° turn in a line to reduce the number of joints.

Angle valve

Derives its name from the drilled ball that swivels on its vertical axis and is operated by a handle.

-a quarter turn of the makes it a quick-closing or quick-opening valve

-popular in industrial, chemical, and gas transmission applications

Ball Valve

most commonly used in place of a gate valve in cases where absolute, bubble-free shutoff is required.

-can be placed into a very small space between pipe flanges

-for larger diameters and flows; fire pro

Butterfly valve

2 designs of butterfly valve

1. wafer body

2. Lug body

placed between pipe flanges; flange bolts surround the vave body

Wafer body

has protruding lugs that provide bolt holes matching those in flanges

Lug Body

quarter-turn design similar to a ball valve, with a ball replaced by a plug

-requires a higher operating torque for closure

Plug valve

Located at the lower end of the pump used to prevent loss of priming the pump

-aka retention valve

Foot valve

Main function is to prevent the reversal flow of gas or liquid in the line.

-Principally used in industrial piping connections for gas, water, steam, air, and other general vapor services.

Check valve

Type of check valve: Permits straight-through flow when open; less resistant to flow than lift check

Swing check valve

Type of check valve: primarily used for gases or compressed air or in fluid systems where pressure drop is not critical.

Lift check

familirize

a simple kind of rotary pump that a pair of gears push the liquid.

-commonly used for piping high viscocity