National Plumbing Code of the Philippines: Plumbing Fixtures

Flashcards covering the National Plumbing Code of the Philippines standards for plumbing fixtures, settings, classifications, and prohibited types.

Plumbing Fixture Quality

Fixtures must be made of dense, durable, non-absorbent materials with smooth, impervious surfaces and acid-resistant porcelain enamel.

Fixture Classification

Plumbing fixtures are categorized into three main types: Soil, Scullery, and Bathing.

Water Closet Setting (Wall)

A water closet must be set $0.375\,meter$ from its center to any side wall.

Water Closet Setting (Fixture)

A water closet must be set $0.75\,meter$ center to center to any similar fixture.

Direct Flush Valve

A valve that allows flushing action to be obtained directly through a connection into the bowl without a tank.

High Tank

A type of flush tank where the tank is located high above the toilet bowl.

Close coupled

A water closet design where the flush tank and toilet bowl are separate pieces joined together.

One piece

A water closet design where the tank and bowl are manufactured as a single integrated unit.

Washdown

A water closet flushing action characterized by a water area of $8\,inches \times 10\,inches$ and a $2.5\,inches$ deep seal.

Siphon jet

A water closet flushing action characterized by a water area of $12\,inches \times 14\,inches$ and a $3\,inches$ deep seal.

Reverse trap

A water closet flushing action characterized by a water area of $9\,inches \times 10\,inches$ and a $3\,inches$ deep seal.

Siphon vortex

A water closet flushing action characterized by a water area of $11\,inches \times 13\,inches$ and a $3\,inches$ deep seal.

Elongated Toilet

A water closet shape designed with a longer bowl compared to the Regular Round type.

Prohibited Fixtures

Include Pan, washout, and valve plunger offset; water closets with reversible seats; Long Hopper; Latrine; Trough Urinals; and Dry or Chemical Closets.

Urinal Setting (Wall)

Must be set $0.3\,meter$ from its center to any sidewall.

Urinal Setting (Fixture)

Must be set $0.6\,meter$ center to center from similar fixtures.

Flushometer valve

A self-closing type valve that discharges a predetermined quantity of water; prohibited from manual control for group urinals.

Recessed / Built in Bathtub

A bathtub that is permanently attached or built into the walls and floor of the bathroom.

Combination Waste and Overflow

A bathtub drain fitting that manages both the primary waste and the safety overflow.

Bidet Setting

Must be set $0.375\,meter$ from its center to any side wall or $0.75\,meter$ center to center to any similar fixture.

Floor Drain Outlet Size

The minimum outlet size of a floor drain shall be $2\,inches$.

Floor Drain Strainer Area

The combined free area of the holes in the strainer must equal the size of the drain outlet.

Floor Drain Trap Seal

The trap must be a deep seal with a minimum of $3\,inches$ trap seal.

Backwater valve

Equipment required for floor drains installed below ground level.

Shower Receptor Slope

The receptor floor shall drain with a slope of not less than $2\%$ and not more than $4\%$.

Shower Threshold

The threshold shall accommodate a door with a minimum width of $559\,mm$.

Shower Compartment Area

The minimum interior area shall be $0.60\,sq.m$ and must encompass a $762\,mm$ diameter circle.

Shower Compartment Height

The area shall maintain a height of $1.78\,m$ above the shower drain.

Gang Shower Drain Spacing

Drains for gang showers must be spaced $4.9\,m$ apart.