Zone Valves

Dual Port Ball Valve

Where Do We Use Them?

Source Valves Main Line Valves Riser Valves Service Valves Zone Valves

Zone Valve BoxCan be plumbed left to right OR right to left

5.1.4.3 Valve TypesShall Be!

PRESSURE GAS Quarter Turn Full Port, Ball Type Brass or Bronze Have Extensions Three Piece Cleaned For Oxygen

VAC & WAGD Quarter Turn Full Port, Ball, or

Butterfly Type Brass or Bronze Have Extensions Three Piece

5.1.4.4 Source ValvesShall Be!

“placed at the immediate connection of each source system”

“to permit the entire source including all accessory devices (e.g., air dryers, final line regulators, etc.), to be isolated from the facility.”

“be located in the immediate vicinity of the source equipment.”

5.1.4.4 Source valvesShall Be!

“labeled in accordance with 5.1.11.2”

5.1.11.2 Name or Chemical Symbol of Gas/Vac Room or Area Served A caution not to close or open except in

emergency

5.1.4.5 Main Line ValvesShall Be!

Provided In The Main Supply Line Inside The Building Except When:“The source and source valve are located

inside the building served”“The source system is physically mounted to

the wall of the building served and the pipeline enters the building in the immediate vicinity of the source valve”

5.1.4.5 Main Line ValvesShall Be!

“located to permit access by authorized personnel only” (above the ceiling or behind a locked door)

“located on the facility side of the source valve and outside the source room, enclosure, or where the main line first enters the building”

5.1.4.6 Riser ValvesShall Be!

“Each riser supplied from the main line shall be provided with a shutoff valve in the riser adjacent to the main line”

“Riser valves shall be permitted to be located above ceilings, but shall remain accessible and not be obstructed”

5.1.4.7 Service ValvesShall Be!

“installed to allow servicing or modification of lateral branch piping from a main or riser without shutting down the entire main, riser, or facility”

Only one valve is required for each branch Placed in the branch piping prior to any

zone valve box

5.1.4.7 Service ValvesShall Be!

“located according to one of the following:Behind a locked access doorLocked open above a ceilingLocked open in a secure area

Sensors for area alarms may be placed in any relationship to a service valve

5.1.4.8 Zone ValvesShall Be!

“All station outlets/inlets shall be supplied through a zone valve as follows:The zone valve shall be placed such that a

wall intervenes between the valve and outlets/inlets that it controls

The zone valve shall serve only outlets/inlets located on that same story”

5.1.4.8 Zone ValvesShall Be!

Operable from a standing position in the corridor

Cannot affect the gas/vac supply to another zone or the rest of the system

A psi/vac indicator on outlet/inlet side of each valve

Visible and accessible at all times

5.1.4.8 Zone ValvesShall Be!

Not be behind open/closed door or hidden from plain view

Not be in closed/locked rooms, areas, or closets

Located immediately outside each vital life-support, critical care, or anesthetizing location & accessible in an emergency

5.1.4.8 Zone ValvesShall Be!

All gas delivery columns, hose reels, control panels, etc. must be downstream of a zone valve.

5.1.4.9 In-Line ValvesShall Be!

Optional, permitted to isolate individual rooms or areas for maintenance

Must be locked in a restricted area or locked open

Sensors for area alarms may be placed in any relationship to a inline valve

5.1.4.10 Valves for Future Connections

Shall Be!

Must be locked in a restricted area or locked open

Downstream pipe must be capped with tubing allowance for cutting & re-brazing

E Z Backfeed® Products

Patented

There is a need for:■An acceptable place to backfeed that is

Safe Easy to find Easy to access

■An acceptable place to install transducers that is Safe Easy to find Easy to access Easy to test

E Z Backfeed™ Products

1. E Z Backfeed® / E Z Feed™

2. E Z Find™

3. Retrofit adaptor assembly

The Key

E Z Backfeed™ / E Z Feed™

Medical gases may be fed from the zone valve box

E Z Backfeed™ / E Z Feed™

Medical gases may be fed into specific areas (zones) of the medical gas pipeline system – I.E. critical care areas

E Z Find™

E Z Find™

E Z Feed™

In the event of a disaster; waiting rooms, hallways etc. could be used as areas to provide medical gases using the E Z Feed™ feature and rail systems.

E Z Backfeed™ x E Z Find™

E Z Find™

Is this where you want your transducers ?

Is this where you want to test transducers ?

E Z Find™

E Z Find™ on left

E Z Find™ EMT Conduit Ready

E Z Retrofit adaptor

Retrofits into most any existing zone valve box with a gauge port

Retrofit adaptor assembly

The need or problem being addressed

NFPA Health Care Facilities Handbook (1996 edition), section 4-3.1.1.4 states: “Backfeeding is a way of pressurizing a piped gas system through a station outlet and is opposite to the normal way of pressurizing a system. It is sometimes done when the supply source is interrupted or portions of the system need to be shutdown. This is a very poor practice. Station outlets were designed for flow in an outward direction.” With E Z Backfeed valves in a medical facility’s zone valve boxes this concern is eliminated.

E Z Backfeed™ Product Benefits

The benefits provided are: the facility has available on line port(s) for backfeeding and / or feeding specific areas of the facility for emergency preparedness and for remodeling. Also, the transducers, which provide/monitor gas line pressures in the zone, are able to be installed in the corresponding zone valve box for easy access for testing and service.

Sleep Lab Control Panel

Sleep Lab Control Panel