Flow Testing; Records; Repair - Task Force Tips Twister Instructions For Installation, Safe Operation And Maintenance

12.2.2 FLOW TESTING

Flow testing must be conducted in the following manner.
1. The nozzle shall be mounted so that the fl ow rate and pressure through the nozzle and the pressure at the inlet can be
accurately measured.
2. With the shut off fully open, the inlet pressure shall be adjusted to the rated pressure ±2 percent.
3. The valve or shut off and pattern controls shall be operated through their full range of motion at 100 psi (6.9 bar or 690 kPa)
with no signs of leaking, binding or other problems.
4. Evaluate the fl ow of nozzles as defi ned by NFPA 1964 in the following manner:
Basic Spray Nozzles shall fl ow no less than and no more than 10 percent over the rated fl ow at the rated pressure in
the straight stream and wide-angle fog settings.
Constant and Selectable Gallonage Nozzles shall fl ow no less than and no more than 10 percent over the rated fl ow
at the rated pressure at each predetermined fl ow selection.
NFPA 1962: Standard for the care, use, inspection, service testing, and replacement of fi re hose, couplings, nozzles and fi re hose appliances. (2013
ed., Section 5.3). Quincy, MA: National Fire Protection Agency.

12.2.3 RECORDS

A record of testing and repairs must be maintained from the time the nozzle is purchased until it is discarded. Each TFT nozzle is
engraved with a unique serial number which, if so desired, can be used to identify nozzle for documentation purposes.
The following information, if applicable, must be included on the test record for each nozzle:
1. Assigned identifi cation number
2. Manufacturer
3. Product or model designation
4. Vendor
5. Warranty
6. Hose connection size
7. Maximum operating pressure
8. Flow rate or range
9. Date received and date put in service
10. Date of each service test and service test results
11. Damage and repairs, including who made the repairs and the cost of repair parts
12. Reason removed from service
NFPA 1962: Standard for the care, use, inspection, service testing, and replacement of fi re hose, couplings, nozzles and fi re hose appliances. (2013
ed., Section 5.3). Quincy, MA: National Fire Protection Agency.
12.3

REPAIR

Factory service is available with repair time seldom exceeding one day in our facility. Factory-serviced nozzles are repaired by
experienced technicians, wet tested to original specifi cations, and promptly returned. Repair charges for non-warranty items are
minimal. Any returns should include a note as to the nature of the problem and whom to reach in case of questions.
Repair parts and service procedures are available for those wishing to perform their own repairs. Task Force Tips assumes no liability
for damage to equipment or injury to personnel that is a result of user service. Contact the factory or visit the web site at tft.com for
parts lists, exploded views, test procedures and troubleshooting guides.
Any alterations to the nozzle and its markings could diminish safety and constitutes a misuse of
CAUTION
this product.
©Copyright Task Force Tips LLC 2002 - 2018 LKB-100 August 2, 2018 Rev11