Multi Head Showers
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Transcript of Multi Head Showers
The Valve
The ValvesUse ¾” thermostatically controlled valves
It’s not necessary to have ¾” supply connected to ¾” valve.
How Many Heads? The sum total flow of all shower outlets
(Shower heads, Hand Showers, Body Sprays) combined cannot exceed the maximum flow rate of the valve at a given water pressure
Shower Heads
Hand Shower
Body Spray
Example:Shower head delivers 2.5gpm at 80psi*5 heads x 2.5gpm = 12.5gpm
Valve is rated at 16gpm No problem!
* 50psi is recommended for showers with 3 or more heads
What happens when the home owner removes the restrictors?
Unrestricted, the flow rate of a typical shower head will be approx. 4.5gpm.
4.5 x 5 = 22.5 Now the 16gpm valve can’t deliver
Note: Do not tee off of a single ½” or ¾” supply to service two or more thermostatic valves.
Solution: If you need more than one valve use a 1” supply or plumb each valve with a separate supply directly from the main or manifold
The DrainIn the prior example 5 heads could deliver
62.5 gallons of water in 5 minutes.
Where will it go?
Two 2” drains or one 3” drain is recommended for the multi head shower
Note: Pay particular attention to this on accessible showers
Hot WaterThe bigger the shower, and more heads
means more HOT WATER!
A 50 gallon hot water heater will supply a 4 head custom shower for approx. 8 minutes.
100 gal should be a minimum
Volume Control
Custom Showers are generally designedwith separate on/off volume controls
One for the shower headOne for the hand showerOne per three body sprays
Body Spray Any configuration of 2 or more body spray
heads must include a pressure balance loop.This insures that each head delivers the same
spray volume and temperature
Pressure Balance Loop
Positioning Shower Components
Positioning Shower ComponentsA ) User height is a critical factor in setting the
height of shower outlets.Note: Children or anyone confined to a wheelchair can be accommodated by a hand held shower head.
B)The shower head should be set at a level above the head of the tallest user but within the reach of the shorter user. (excluding children)
Positioning Shower Components
Positioning Shower ComponentsC)The top level body-spray is normally set at
shoulder height. It should not spray into the face of the user.
D)The mid-level body spray is normally set at waist or hip level.
E) The lowest level body spray is normally set at thigh level or knee height.
Positioning Shower Components
Positioning Shower ComponentsNote: Body sprays should be place on a different plane than the shower head. The idea is to have the entire body covered by water.
F)The thermostatic temperature control valve should be set at approx. waist height and should be easily accessible.
Positioning Shower ComponentsG) Volume controls (on/off valves) should be
easily accessible to anyone using the shower, usually about waist high and slightly above the thermostat valve .