TB 85 Akron 4-Way Valve Flashcards
(22 cards)
What type of lugs on both inlets of the 4-Way Valve?
Winged lugs
What is the sturdy hand wheel connected to?
Diverter located inside main body
At what angle does the diverter direct the flow of water?
90 degree angle from the selected inlet to one of two outlets
Does pressure affect effort required to turn the hand wheel?
No
What type of threads are on 4” inlets and outlets?
NST threads
What is the weight of the 4-Way Valve?
35 lbs
What is the length (male to male)?
12-1/2”
What is the width (female to female)?
14”
What is the height?
13-1/2”
On a 2-1/2” single hydrant, the outlet is to be captured using what?
the 2-1/2” to 4” winged increaser
The proper female 4” inlet of the LDHV shall be utilized so that the supply line is pointing _________?
towards the engine’s direction of travel
On a 2-1/2” by 4” hydrant, which outlet is to be captured and why?
The 4” outlet to maximize water flow
On a Double 4” hydrant, which outlet is to be captured?
The outlet facing the fire
When possible, ____________ should be used for all connections?
4” supply hose and/or 4” soft suctions
What is the FL caused by the LDHV when flowing the following GPMs: 250, 500, 750, 1000, 1250, 1500, 1750, 1900?
0, 4, 4, 6, 7, 9, 10, 17 psi
What is an option when a single hydrant is obstructed?
Use a bypass between the hydrant and the LDHV
Prior to delivery, each LDHV is hydrostatically tested to __________?
900 psi
When does S&M conduct an inspection of the LDHV?
During the annual pump test
What is the daily check for the LDHV?
Turn hand wheel in both directions and inspect for any damage on the valve body. This same check should be completed after each use.
What is utilized for the sealing system between ports (inlets and outlets)?
Ultra high molecular weight plastic seats that seal the threads
Does the LDHV need lubrication?
No
What is maintenance for the LDHV?
Keep free of dirt/debris, handle tool in a manner that prevents abuse
