Zone Valves

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Zone Valves
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Dual Port Ball Valve
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Where Do We Use Them?

• Source Valves
• Main Line Valves
• Riser Valves
• Service Valves
• Zone Valves

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

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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.

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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

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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

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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

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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

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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

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5.1.4.7 Service ValvesShall Be!

• located according to one of the following
• Behind a locked access door
• Locked open above a ceiling
• Locked open in a secure area
• Sensors for area alarms may be placed in any
  relationship to a service valve

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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

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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

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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

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5.1.4.8 Zone ValvesShall Be!

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

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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

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5.1.4.10 Valves for Future ConnectionsShall Be!

• Must be locked in a restricted area or locked
  open
• Downstream pipe must be capped with tubing
  allowance for cutting re-brazing

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E Z Backfeed Products

• Patented

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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

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E Z Backfeed Products

• E Z Backfeed / E Z Feed
• E Z Find
• Retrofit adaptor assembly

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The Key
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E Z Backfeed / E Z Feed

• Medical gases may be fed from the zone valve box

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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

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E Z Find
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E Z Find
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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.

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E Z Backfeed x E Z Find
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E Z Find

• Is this where you want your transducers ?
• Is this where you want to test transducers ?

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E Z Find
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E Z Find on left
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E Z Find EMT Conduit Ready
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E Z Retrofit adaptor

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

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Retrofit adaptor assembly
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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 facilitys zone valve boxes this concern
  is eliminated.

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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.

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Sleep Lab Control Panel

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Sleep Lab Control Panel
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