Specification NH--16 Rev.:4/11/2010

Chemical Injection Technologies
Product/Specification Bulletin
SUPERIOR® Automatic Switchover
Gas Ammoniator, Series NH-16
Direct Cylinder Mounted - All Vacuum
GENERAL DESCRIPTIONThe SUPERIOR® Series NH-16
Automatic Switchover Gas
Ammoniator is a state-of-the-art, totally vacuum-operated systemdesigned to automatically switch ammonia feed from an empty
cylinder to a full cylinder. The Series NH-16 allows round-the-Clockchlorination without being concerned about running out of ammonia
when the system is unattended. Series NH-16 chlorinators are of thevacuum-operated solution feed type designed to mount directly on
ammonia cylinder valves. Two vacuum regulators, each containing
an integral and independent latching mechanism, are mounted
directly onto two ammonia cylinder valves. A ammonia gas flow
meter panel indicates the amount of ammonia being fed and may belocated wherever it is safest andmost convenient. Ammonia flowrate is manually adjusted and thedesign permits easy addition of anumber of automatic flow rate
control devices. A high efficiency,
water operated ejector produces thevacuum necessary to operate thesystem.
The ejector assembly
contains a back-flow check valve
system to prevent pressurized waterfrom entering the ammoniator. A
spring-opposed diaphragm vacuum
regulator controls the ammonia gas
flow rate and also acts as the safety
shut-off valve.

10. All SUPERIOR® gas ammoniators carry a 3-year limited warranty,
in addition to a lifetime warranty on 4 vital parts: main diaphragm,
springs, inlet adaptor and body bolts.
11. Fewer parts, combined with superior materials and a superior
design gives you a superior gas ammoniator.

FLOW METER CAPACITIESSUPERIOR's modular design concept allows the ammonia gas
indicating meter and flow rate control valve to be located wherever it
is most convenient for the operator, and also in the safest location.
Variable area flow metering tubes are available with dual
English/Metric scale maximum capacities of 0.8, 1.5, 4, 10, 25, 50 and
100 pounds per 24 hours ofammonia gas, as well as 15, 30, 75,
200, 500, 1000 and 2000 grams perhour, respectively. All meteringtubes are interchangeable and may
be changed in the field without
special tools.

MATERIALSCONSTRUCTION

One of SUPERIOR's major
competitive advantages is the useof the finest, strongest and mostdurable materials available.
Extensive use of Fluoroplastics andfiberglass reinforced thermoplastics allow SUPERIOR® Gas
Ammoniators to withstand attack byammonia in any form and to givethe longer operational life. Many
parts are guaranteed for the life of
the equipment against ammonia
damage.

FEATURESThe SUPERIOR ® Series NH-16
represents the most modern design
technology coupled with the very
best materials available to create anoutstanding, user friendly piece ofequipment. It is designed with usersafety as a primary concern.

SYSTEM OPERATION

1. A new ultra-thick, fluoroplastic
yoke coating gives superior
corrosion resistance, won't crack, peel or chip.
2. All molded parts are fiber-glass reinforced ABS plastic, designed
for superior strength, warp-resistance and ammonia resistance.
3. The rate valve "Seat" is pure fluoroplastic and will not swell, stickor become brittle with age or exposure to liquid ammonia.
4. All external bolts and nuts are Titanium for complete corrosion
resistance..a SUPERIOR® exclusive.
5. Extra heavy-duty outlet threads on the ejector diffuser prevents
breakage from over-tightening or "bumping" of the ejector assembly.
6. Easier to service and perform routine maintenance, with standard
size wrench lugs provided on all screwed-together ejector parts.
7. All vacuum fitting holes are heavily reinforced to prevent thepossibility of cracking from over-tightening fittings.
8. "Dual-pressure" check valve is standard on all SUPERIOR® gas
Ammoniators. Proven high back-pressure unitized check valve
design protects against sudden surges up to 300 PSIG while a springloaded diaphragm check provides positive shutoff even when there
is no back-pressure to force the seat Closed.
9. Built-in switchover "detent" mechanism in each regulator requires
no field adjustment, and allows operator to easily designate thestandby and operating cylinders.

Pub: Specification NH-16, Rev: 11042010

OFThe automatic switchover vacuum
regulators are securely clamped
onto the ammonia cylinder valves.
Vacuum tubing connects eachregulator to the wall mounted pressure relief/vent valve which also
serves as an interconnecting point for the vacuum tubing. A singlepiece of vacuum tubing connects the pressure relief valve to the wall
mounted remote meter tube/rate valve panel. The ejector isconnected to the remote meter panel with a single piece of vacuum
tubing.
Water under pressure flows through the ejector at high velocity
causing a strong vacuum to be created. This opens the check valvesin the ejector assembly and transmits a vacuum signal through theremote meter tube/rate valve panel, back to the vacuum regulators.
When the vacuum reaches a pre-set level, the diaphragm in theregulator moves, opening the ammonia inlet safety valve, and permits
gas to flow from the ammonia cylinder. The spring-opposed
diaphragm and inlet valve regulate the vacuum at this point.
Ammonia gas passes through the regulator, pressure relief valve
connector, remote flow meter panel and rate control valve to theejector. The gas mixes with the ejector water and is discharged
through the diffuser into the water being treated.
When the ammonia supply is depleted in one source, vacuum starts
to increase in the system. This causes the diaphragm in the "standby" regulator to be pulled back, overcoming the detent mechanismand opening the inlet/safety valve. Ammonia gas is then withdrawn
from the "stand-by" cylinder to satisfy the increased system vacuum
and the vacuum returns to the operating level. The empty cylinder isreplaced at the operator's convenience, and the regulator then placedon "stand-by".

Copyright© 2006, Chemical Injection Technologies, Inc.

Printed in U.S.A.

SPECIFICATIONS

The ammoniator shall be SUPERIOR® MODEL NH-16 manufactured
by Chemical Injection Technologies, Inc., Ft. Pierce, Florida, and shallhave a maximum capacity of _______ pounds per day (gr/hr)ofammonia feed and shall be equipped with a ammonia flow meter of_______ pounds per day (gr/hr).
The ammoniator shall be of modular design consisting of two (2)automatic switchover vacuum regulators, one (1) pressure relief/ventvalve, one (1) flow meter/rate valve panel, and one (1) ejector/checkvalve. Each of these assemblies shall be capable of being
individually located wherever safety and/or operator convenience
dictates.
The vacuum regulators shall mount directly on the ammonia cylinder
valves by means of a positive yoke type clamp having an integral
tightening screw with slide bar handle. No wrenches or other tools
shall be required to mount or dismount the vacuum regulator from theammonia valve. The ammonia valve/ammoniator inlet adaptor shall be
constructed of stainless steel which shall be inert to the effects ofwet, dry or liquid ammonia. The inlet safety shut-off/vacuum
regulating valve shall be of capsulated design, easily removable asa unit from the outlet side of the yoke. A fluoroplastic filter shall be
installed in the vacuum regulator inlet and shall be capable ofremoving impurities greater than 25 microns. All external screws andnuts shall be made of Titanium to prevent corrosion.
Each automatic switchover vacuum regulator shall contain it's own
built-in diaphragm detent mechanism, which shall be made entirelyof non-metallic corrosion resistant materials. The detent mechanism
shall be factory pre-set and shall not require any field adjustment.
The reset knob shall be designed to automatically “ratchet” into freeturning mode after the regulator has been reset, allowing no further
forward pressure to be applied to the detent mechanism shaft without
regard to further turning of the knob.
The flow meter/rate control valve panel shall be capable of mounting
wherever it is safest and most convenient for operating personnel.
The panel shall be constructed of fiberglass reinforced thermoplastic
material and shall incorporate a flow rate control valve made offluoroplastic material which is inert to the corrosive effects ofammonia. The rate valve metering tip shall be constructed of fine,hard-drawn silver. Design shall provide for full closing of the rate
valve without engaging the control surfaces, to prevent damage.
Vacuum shall be created by a fixed-throat venturi/ejector system
connected directly to the ammonia solution diffuser.

A dual high-pressure/low-pressure check valve system shall prevent
water from entering the gas system. The ejector assembly shall becapable of withstanding water pressure up to 300 PSIG (20.7 Bars).
A universal-type ammonia solution diffuser shall be provided whichshall allow close-coupling of the ejector to a water main, use offlexible solution hose or rigid solution pipe without the use of specialadaptors.

STANDARD ACCESSORIES
50 ft. - Vent & vacuum tubing
20 - Lead cylinder connection gaskets
1 - Cylinder Wrench
2 - Vent insect screens

OPTIONAL ACCESSORIES AVAILABLE
Inlet Water Assembly
Wall manifold kits
Booster pumps
Residual Analyzers
Automatic Controls
Ton Container Adaptors

Gas Masks
Gas Detectors
ScalesGaugesAmmonia Comparators
Others Available

OTHER SUPERIOR® SYSTEMS AVAILABLE
MULTIPLE-POINT GAS CHLORINATORS
200 POUNDS PER DAY (5 KG/HR)
500 POUNDS PER DAY (10 KG/HR)GAS SULFONATORSCHLORINATORSAUTOMATIC FLOW PROPORTIONING
AUTOMATIC RESIDUAL CONTROL_________________________________________________________

Chemical Injection Technologies, Inc.
835 Edwards Rd., Ft. Pierce, FL, 34982, USA(772) 461-0666
Fax: (772) 460-1847
E-Mail: superior@chlorinators.com
www.chlorinators.com____________________________________________