8.1 Water Closet Carriers

Siphon jet water closets

Siphon jet water closets use syphonic flushing action to evacuate the bowl. This is a quiet and economical type of flushing action that provides quick, efficient results. The large water surface area of the bowl, for better sanitation, is another desirable feature of the siphon jet water closet. The siphon jet closet mounts to the carrier with four mounting studs.

Note the shape of the trap in the drawing below, S trap, which allows for syphonic action to take place.

The four-hole type water closet and carrier are the most common installed today.

Blowout water closets

Blowout water closets use a direct jet stream for bowl evacuation. This type of flushing action is rapid and forceful and primarily used in heavy duty installations such as stadiums, hospitals and correction facilities. Due to this powerful flushing, the blowout water closet is noisier in operation than the siphon jet. The blowout closet mounts to the wall with three mounting studs.

NOTE

It is not recommended to mount Blow-out type water closets in a “Back to Back” type installation.

Determination of right and left hand systems

Horizontal Carriers are specified either left hand or right hand (L or R). With your back to the wall, point in the direction of flow. If the flow is to the left, a left hand carrier is required. Back-to-back carriers are reversible, and do not require a flow direction specification.

PLATE TYPE CARRIERS

The plate type floor mounted fixture carriers support wall hung fixtures such as urinals, lavatories and water coolers independent of the wall.

Carriers are provided with complete installation instructions.

CONCEALED ARM CARRIERS

Concealed arm lavatory carriers must be compatible with the fixture they are supporting.

Concealed arm supports consist of ductile iron arms with levelling and locking hardware. The arm assemblies may be available in two lengths to accommodate standard and Barrier Free fixtures. After the carrier installation and completion of wall construction, final adjustment can be made to the arm and sleeve assembly. Then the fixture is slid over the arms. Level and locking are accomplished through openings in the fixture itself.

Image Credits

1.  American Standard (n.d.). Afwall. https://www.americanstandard.ca/Commercial-Wall-Hung-Toilets/Afwall-Millennium-1.1-%E2%80%93-1.6-gpf-(4.2-%E2%80%93-6.0-Lpf)-Top-Spud-Elongated-Wall-Hung-EverClean-Bowl/WHITE-3351101020
2. Zurn Industries (n.d.). Z1201-N. https://www.zurn.com/products/building-drainage/carriers-fixture-supports/water-closet-carriers/z1201-n
3. Ibid.
4.  American Standard (n.d.). Rapidway. https://www.americanstandard.ca/Commercial-Wall-Hung-Toilets/Rapidway-16-gpf-60-Lpf-Top-Spud-Elongated-Wall-Hung-Bowl/WHITE-3445J101020Horizontal fittings for shallow rough-in type for blowout water closets shallow rough-in type.
5. Jay R. Smith. (n.d.). Horizontal Fittings for Shallow Rough-In Type. https://www.jrsmith.com/horizontal-fittings-0310y
6.  Zoro Tools. (n.d.). Toilet Carrier, 4″ Size, Cast Iron. https://www.zoro.com/zurn-toilet-carrier-4-size-cast-iron-z1203-nl4/i/G5894546/
7.  Zurn. (n.d.). Plate Type System with Bearing Plate. https://www.zurn.com/products/building-drainage/carriers-fixture-supports/urinal-carriers/z1222
8. Zurn. (n.d.). Universal Lavatory Carrier. https://www.zurn.com/products/building-drainage/carriers-fixture-supports/lavatory-sink-carriers/z1231ez