What is the K-factor for sprinklers?
The k-factor for a fire sprinkler is the discharge coefficient, or in normal human terms just relates to the amount of water that is permitted through the sprinkler. The k-factor is dependent upon the orifice diameter of the sprinkler – a low k-factor (such as K2.
What is the color code for sprinkler heads?
Sprinkler Response Temperatures
| CLASSIFICATION | MAXIMUM CEILING TEMPERATURE | GLASS BULB COLOR |
|---|---|---|
| Ordinary | 100°F | Orange (135°F); Red (155°F) |
| Intermediate | 150°F | Yellow (175°F); Green (200°F) |
| High | 225°F | Blue |
| Extra High | 300°F | Purple |
How much clearance do you need below sprinkler heads?
18 inches
As a general rule, NFPA 13, Installation of Sprinkler Systems, requires 18 inches of clearance, but makes the following modifications: For standard pendent and upright spray (SSP/SSU) sprinklers, the 18- inch dimension is not intended to limit the height of shelving or storage along a wall as illustrated below.
What is the standard K-factor?
The K-factor comes from the ratio of the neutral radius divided by the thickness of the material on prepared charts and has a value between 0.3 and 0.5.
What is K rating in sprinkler?
In fire protection engineering, the K-factor formula is used to calculate the discharge rate from a nozzle. Spray Nozzles can be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.
Does sprinkler pipe have to be red?
Notwithstanding any other provision of law, all exposed risers and cross connections of completed buildings in existence on March 2, 2010 shall be painted red by June 2, 2010, and all handles of valves serving such sprinkler system shall be painted green.
What is the difference between a wet and dry sprinkler system?
In a wet system, the pipes are filled with pressurized water. When a fire occurs, the system immediately discharges water to extinguish the fire. Conversely, dry systems are filled with pressurized nitrogen or air that keeps water at a riser.
What is the beam rule?
3.2.1 “The Beam Rule” In short the “beam rule” states that there must be at least 1 foot (0.3048 m)of separation between the sprinkler and the obstruction if the deflector is any distance above the bottom of the obstruction.
Can I paint fire sprinkler pipes?
Dedicated sprinkler piping shall be painted and such painting certified in accordance with Sections 903.6. 1 through 903.6. 5. In addition to painting, sprinkler piping may also be identified by lettered legend in accordance with ANSI A13.
Can a dry sprinkler system freeze?
Dry pipe systems generally freeze due to water collecting in improperly pitched pipes, failure to remove accumulated water from low point drains, or failure to drain the system properly after the valve has tripped. Air is usually supplied to a dry pipe system by a compressor.
What is a k factor in sprinkler system?
K-Factor. They are dimensionless numbers used to calculate the flow and pressure of water discharged from sprinkler heads, according to Hydronics Engineering. K-factors can be determined by using the following equation: K = Q/P1/2, where K is represented by gallons per minute, or gpm/psi1/2, Q is flow rate in gpm and P is pressure in psi,…
What type of sprinkler do you use for your lawn?
“A rotary sprinkler, it has a spray distance of seventy feet and versatile turbo motor. It’s a perfect choice for those who aren’t tolerant of noise – it operates almost silently.” “This is a traveling sprinkler that is a great find for large lawns.
What is the best weighted sprinkler for your garden?
Editor’s Choice: GreenGlow Garden Weighted Rotating Sprinkler “It’s a rotating sprinkler made with engineering plastic and thermoplastic rubber, which promises a decent quality and long life of irrigating. It has multiple adjustable nozzles and three versatile spray arms.” Premium Pick: Nelson 818653-1001 Traveling Sprinkler
What are the different types of extended coverage sprinklers?
We deliver an extensive package of Extended Coverage Sprinklers such as the F1FR, G4, HSW, SWC, JL112, K25, DH56 and DH80 with a short delivery time. Quick Response (QR Extended Coverage) up to 6,1m x 6,1m coverage for light hazard occupancies. Coverage up to 4,3 m x 7,9 m.