EasyManuals Logo

Janus Mv Series User Manual

Default Icon
141 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #78 background imageLoading...
Page #78 background image
Page: 64
MV & LV SERIES ENGINEERED DRY CHEMICAL FIRE EXTINGUISHING SYSTEM
OPERATION, DESIGN, & SERVICE MANUAL
REV C
Document # DOC324
Issued: April 26, 2018
Revised: March 22, 2022
UL FILE # EX27541
3.5 Pipe Determination
Pipe sizes must be determined using the Janus
Design Suite® flow calculation software.
Table 3.5 may be referenced for the purposes
of estimation. e actual diameters may vary
due to distance or software optimization.
Flowcalculationshavebeenveriedatanambienttemperatureof70°F(21.1°C).Storageoutsideoftherange
of70°F±10°(21.1°C±5.5°)mayresultininaccurateowcalculationsandcauseoneormorenozzlestonot
discharge the designed quantity of dry chemical agent.
Flowcalculationshavebeenveriedforspecictypesofttings,pipeandpipeID.Failuretomaintaintheveried
limitationsasstatedintheJanusDesignSuite®FlowCalculationSoftwareManualmayresultininaccurateow
calculations and cause one or more nozzles to not discharge the designed quantity of dry chemical agent.
The outlets of a tee branch must be on the same horizontal plane or an imbalance will result from the gravitational
e󰀨ectsofthesolidandvaporseparationandmaycauseoneormorenozzlestonotdischargethedesigned
concentration of dry chemical agent.
IN
OUT
OUT
OUT
OUT
IN
IN
OUT
OUT
Table 3.5 - Pipe Size vs. Flow Rate
Schedule 40
Pipe Size Nomi-
nal Inches (mm)
Minimum Flow
Rate For All
Sections Leading to a Tee
Lbs/Min Kg/Min
3/8 (10) 46.5 21.1
1/2 (15) 77.4 35.1
3/4 (20) 136.2 61.8
1 (25) 219 99.3
1 1/4 (32) 380.4 172.5
1 1/2 (40) 523.8 237.6
2 (50) 894.6 405.8
2 1/2 (65) 1321.8 599.5
3 (80) 2140.2 970.8
4 (100) 3878.4 1759.2
6 (150) 8596.2 3899.2
Section 3 System Design

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Janus Mv Series and is the answer not in the manual?

Janus Mv Series Specifications

General IconGeneral
BrandJanus
ModelMv Series
CategoryFire Extinguisher
LanguageEnglish