GAS AMMONIATOR
SERIES NH-15
The SUPERIORTM Modular Automatic Switchover Series NH-15 is a state-of-the-art, vacuum-operated system designed to automatically switch ammonia feed from an empty cylinder to a full cylinder.
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The Series NH-15 allows round-the-clock ammoniation without being concerned about running out of ammonia when the system is unattended. Series NH-15 ammoniators are of the vacuum-operated solution feed type, designed to mount directly on ammonia cylinder valves.
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A vacuum-operated switchover module is mounted on the wall and connected to both ammonia vacuum regulators. An ammonia gas flow meter panel indicates the amount of ammonia being fed and may be located wherever it is safest and most convenient.
Ammonia flow rate is manually adjusted, and the design permits easy addition of a number of automatic flow rate control devices.
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A high-efficiency, water-operated ejector produces the vacuum necessary to operate the system. The ejector assembly contains a back-flow check valve system to prevent pressurized water from entering the ammoniator.
NH-15 TYPICAL INSTALLATION
FEATURES
The SUPERIORTM Series NH-15 represents the most modern design technology coupled with the very best materials available to create an outstanding, user-friendly piece of equipment. It is designed with user safety as a primary concern.
1. A new ultra-thick, fluoroplastic yoke coating gives SUPERIORTM corrosion resistance—won’t crack, peel, or chip.
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2. All molded parts are fiberglass-reinforced ABS plastic, designed for SUPERIORTM strength, warp resistance, and ammonia resistance.
3. The rate valve “seat” is stainless steel and will not swell, stick, or become brittle with age or exposure to liquid ammonia.
4. All external bolts and nuts are Titanium for complete corrosion resistance. A SUPERIORTM exclusive.
5. Extra heavy-duty outlet threads on the ejector diffuser prevent 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 the possibility of cracking from over-tightening fittings.
8. “Dual-pressure” check valve is standard on all SUPERIORTM Ammoniators. Proven high back-pressure unitized check valve design protects against sudden surges up to 300 PSIG, while a spring-loaded diaphragm check provides positive shutoff even when there is no back-pressure to force the seat closed.
9. The Switchover Module has been totally re-designed to prevent sticking, misalignment, or wear on internal parts. Up to 20% fewer parts than other designs means greater reliability.
10. Automatic Reset – The SUPERIORTM Modular Automatic Switchover Gas Ammoniation system requires no manual reset of the switchover module once the empty source is replaced with a new source.
11. Fewer parts, combined with SUPERIORTM materials and a SUPERIORTM design, give you a SUPERIORTM Ammoniator.
NH-15 FLOW DIAGRAM
SYSTEM OPERATION
The vacuum regulators are securely clamped onto the ammonia cylinder valves.
Water under pressure flows through the ejector at high velocity, which causes a strong vacuum to be created. This opens the check valves in the ejector assembly and transmits a vacuum signal through the remote meter tube/rate valve panel and back to the vacuum regulator.
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When the vacuum reaches a pre-set level, the diaphragm in the regulator moves to open the ammonia inlet safety valve, permitting gas to flow from the ammonia cylinder. The spring-opposed diaphragm and inlet valve regulate the vacuum at this point.
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Ammonia gas passes through the remote flow meter panel and rate control valve to the ejector. The gas mixes with the ejector water and is discharged through the diffuser into the water being treated.
FLOW METER CAPACITIES
SUPERIOR™’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 of ammonia gas, as well as 15, 30, 75, 200, 500, 1000, and 2000 grams per hour, respectively.
All metering tubes are interchangeable and may be changed in the field without special tools.
MATERIALS OF CONSTRUCTION
One of SUPERIORTM’s major competitive advantages is the use of the finest, strongest, and most durable materials available. Extensive use of fluoroplastics and fiberglass-reinforced thermoplastics allows SUPERIORTM Ammoniators to withstand attack by ammonia in any form and to provide the longest operational life.
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Many parts are guaranteed for the life of the equipment against ammonia damage.
SPECIFICATIONS
The Ammoniator shall be SUPERIOR™ MODEL NH-15
manufactured by Chemical Injection Technologies, Inc.,
Ft. Pierce, Florida, and shall have a maximum capacity
of____ Pounds per day / gr/hr of Ammonia feed and
shall be equipped with a Ammonia flow meter of _____
pounds per day / gr/hr.
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The Ammoniator shall be of modular design consisting
of a vacuum regulator, flow meter/rate valve panel, and
ejector/check valve. Each of these assemblies shall be
capable of being individually located wherever safety
and/or operator convenience dictates.
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The vacuum regulator shall mount directly on the cylinder
valve 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 the cylinder. The cylinder valve/Ammoniator
inlet adaptor shall be constructed of corrosion-proof stainless
steelwhich shall be inert to the effects of wet, dry or liquid
Ammonia. The inlet safety shut-off/vacuum regulating valve
shall be of capsulated design, easily removable as a unit
from the outlet side of the yoke. A Ceramic filter shall be
installed in the vacuum regulator inlet and shall be capable
of removing impurities greater than 25 microns. A pressure
relief valve shall be incorporated into the vacuum regulator to
prevent pressure from building up in the system. All external
screws and nuts shall be made of Titanium to prevent corrosion.
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The switchover module shall be vacuum operated and
shall be factory pre-set, not requiring field adjustment.
The module shall automatically change Ammonia feed
from an empty Ammonia cylinder to a full cylinder,
with no manual resetting required after switchover
has been made and the empty cylinder replaced. 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 of
fluoroplastic material which is inert to the corrosive
effects of Ammonia. The rate valve metering tip shall
be constructed of fine, K5 Alloy. Design shall provide
for full closing of the rate valve without engaging the control
surfaces, to prevent damage.
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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 be capable of withstanding water
pressure up to 300 PSIG (20.7 Bars). A universal-type
Ammonia solution diffuser shall be provided which shall
allow close-coupling of the ejector to a water main, use
of flexible solution hose or rigid solution pipe without
the use of special adaptors
SPECIFICATIONS
STANDARD ACCESSORIES
50 ft. - Vent & vacuum tubing
20 - Lead cylinder Connection Gaskets
1 - Cylinder Wrench
1 - Vent Insect Screen
OPTIONAL
ACCESSORIES AVAILABLE
Wall Manifold Kits
Residual Analyzers
Automatic Controls
Ton Container Adaptors
Check Valve Assembly
Gas Masks
Gas Detectors
Scales
Gauges
Ball Check Valve
Safe-T-Close
ESD Auto Shut-Off Valve
OTHER SUPERIOR™
SYSTEMS AVAILABLE
VACUFEED LIQUID CHEMICAL FEED SYSTEMS AUTOMATIC SWITCHOVER GAS CHLORINATORS
MULTIPLE-POINT GAS CHLORINATORS
250 POUNDS PER DAY (5 KG/HR)
500 POUNDS PER DAY (10 KG/HR)
GAS SULFONATORS (DECHLORINATOR)
MULTIPLE-POINT AMMONIATORS
AUTOMATIC FLOW PROPORTIONING
AUTOMATIC RESIDUAL CONTROL
SUPERIOR™ Gas Chlorinators are proudly made by Chemical Injection Technologies, Inc.
835 Edwards Road, Fort Pierce, Florida 34982 USA. T: 772-461-0666.