AG Fire Sprinkler Model AG-81, Pendent and Upright sprinklers described in this technical data sheet are standard response, standard coverage 5 mm glass bulb. These sprinklers are designed for use in commercial buildings and factories.
Thermosensitive glass bulb 5 mm is used. The bulb contains a special liquid hermetically sealed in a glass capsule.
Nominal “K” Factor | 8,0 (115) |
Thread Size | 3/4″ NPT (R3/4) |
Nominal Orifice | 17/32” (20 mm) |
Temperatures | 135ºF (57ºC) 155ºF (68ºC) 175ºF (79ºC) 200ºF (93ºC) 286ºF (141ºC) 360ºF (182ºC) |
Maximum / Minimum Working Pressure | 175 psi (12,1 bar) / 7 psi (0,48 bar) |
Factory tested Pressure | 500 psi (34,5 bar) |
Materials | Frame: Brass Deflector: CDA Alloy 510 Screw: CDA Alloy 210, 220, 314, 316, 360 or 544 Cup: CDA Alloy 314 or 353 Washer: Nickel Alloy 440 or Alloy CDA 360 Bulb: Glass, 5 mm |
Reference | Upright: AG8164 (1) (2) (3) (4) Pendent & Recessed Pendent: AG8156 (1) (3) |
Finishes (4) | Bronze Chrome Polyester coated |
At normal temperatures, the glass bulb contains the fluid in both the liquid phase and the vapor phase. The vapor phase can be seen as a small bubble. As heat is applied, the liquid expands forcing the bubble smaller and smaller as the liquid pressure increases. Continued heating forces the liquid to push out against the bulb, causing to shatter, opening the waterway and allowing the deflector to distribute the discharging water.
Model AG-81 sprinklers are standard response sprinklers intended for installation as specified in NFPA13. They must also be installed with the Model AG1 Sprinkler Wrench for pendent and upright models, and the AG2 Sprinkler Wrench for the recessed model, specifically designed by AG Fire Sprinkler for use with these sprinklers. A leak tight ½” NPT (R1/2) sprinkler joint can be obtained with a torque of 8-18ft-lbs (10.8- 24.4N-m). Do not tighten sprinklers over maximum recommended torque. It may cause leakage or impairment of these sprinklers. The sprinklers come with an orange protection, to avoid breakage during assembly. Remove this protection once installed and made sure that everything is correct. The AG Sprinkler Wrenches are designed to install sprinklers with the protection still.
Medium Velocity Water Spray Nozzles
Model | A & B | |||
Max Working Pressure | 12.3 Kg./Sq.Cm (175psi) | |||
Effective Working Pressure | 7 Kg./Sq.Cm (100psi) Max | |||
1.4 Kg./Sq.Cm (20psi) Min | ||||
End Connection | ½” BSPT (½” NPT Optional) | |||
Material | A – Brass, B – Stainless Steel | |||
Included Water Spray Angle for Each K-Factor | 140°, 120°, 110°, 100°, 90°, 80° & 65° | |||
Orifice Size and K-Factor | (mm) | (inch) | (metr) | (US) |
6.0 | 0.236 | K22 | 1.54 | |
7.0 | 0.275 | K30 | 2.10 | |
7.5 | 0.295 | K35 | 2.45 | |
8.0 | 0.314 | K41 | 2.87 | |
9.0 | 0.354 | K51 | 3.57 | |
10.0 | 0.393 | K64 | 4.48 | |
11.0 | 0.433 | K79 | 5.53 | |
12.0 | 0.472 | K91 | 6.37 | |
12.5 | 0.492 | K102 | 7.14 |
Medium velocity water spray nozzle has an external deflector, which discharges water in a directional cone shaped pattern of small droplet size. The water is uniformly distributed over the surface to be protected.
The nozzle is used in deluge water spray system for special hazard fire protection application.
As the design and intent of specific water spray system may vary considerably, a MV nozzle is made available in several combination of orifice sizes and spray angles.
The minimum desirable pressure to achieve a reasonable spray pattern is 1.4 Kg./Sq.cm. The water distribution pattern as shown in the graph in following pages is at an average pressure of 2.0 Kg/Sq.cm. The change in pressure between 1.4 to 3.5 Kg./sq.cm. does not affect considerable change in spray angle. The spray pattern shown is with indoor application. System designer must consider wind velocity while designing the system for outdoor application. Field obstruction if any affecting the spray pattern of the nozzle must also be considered. The nozzle may be oriented to any position as deemed necessary to cover the hazard.
The spray nozzle must be handled with due care. For best results , the storage as well as any further shipment be made in original packing only.
Nozzle which is visibly damaged should not be installed.
Use Teflon tape or soft thread sealant on male thread of the nozzle. The nozzles must be hand tightened into the fitting. HRD make wrench must be used to tighten the nozzle unit into the fitting. Excessive tightening torque may result into serious damage to nozzle arms and the deflector which may affect spray pattern of the nozzle and it’s performance.
It is recommended that water spray system be inspected regularly by authorised technical personnel. The nozzle must be checked for corrosion, external and internal obstruction, blockage if any. The nozzle should be cleaned or replaced if required. The system must be operated with optimum water flow at least twice in a year or as per the provisions of NFPA/TAC or local authority having jurisdiction.
The owner is solely responsible for maintaining the water spray system and the components therein so that it performs properly when required.
High Velocity Water Spray Nozzles
Model | HV-A without strainer/ HV-AS with strainer | ||
Max Working Pressure | 12.3 Kg./Sq.Cm. (175psi) | ||
Effective Working Pressure | 7 Kg./Sq.Cm (100psi) Max | ||
10.5 Kg./Sq.Cm. (150psi) Max | |||
3.5 Kg./Sq.Cm. (50psi) Min | |||
End Connection | ¾” BSPT (¾” NPT Optional) | ||
Material | Housing & Scroll : Brass IS:291 | ||
(Equivalent to ASTM-B21) | |||
Included Water Spray Angle and K-Factor | Spray Angle | K-Factor | |
(metr) | (US) | ||
75° | 22 | 1.54 | |
80° | 18 | 1.26 | |
90° | 32 | 2.24 | |
100° | 26 | 1.82 | |
Approvals | UL Listed |
High Velocity Water Spray Nozzles are internal swirl plate type open nozzles designed for use in fixed water spray or deluge system for the fire protection application.
These nozzles produce solid uniform and dense core of high velocity water spray to effect fire control. Nozzles are normally used to cool the surface as well as for extinguishment. Nozzles are typically used for Deluge protection of special hazards such as oil filled transformers, switch-gear, chemical process equipments, conveyor system and flammable liquid storage areas..The minimum desirable pressure to achieve a reasonable spray pattern is 3.5 Kg./sq.cm. (50 psi). The water distribution pattern as shown in the graph in following pages giving maximum effective axial distance from the nozzle. The spray pattern shown is with indoor application. The system designer must consider wind velocity while designing the system for outdoor application. Field obstruction if any affecting the spray pattern of the nozzle must be considered.
The spray nozzle must be handled with due care. For best results , the storage as well as any further shipment be made in original packing only.
Nozzle which is visibly damaged should not be installed. Use Teflon tape or soft thread sealant on the male thread of the nozzle.
It is recommended that the water spray system be inspected by an authorised technical personnel. The nozzle must be checked for corrosion, external and internal obstruction, blockage if any. The nozzle should be cleaned or replaced if required. The system must be operated with optimum water flow at least three times in a year or as per the provision of NFPA/TAC or local authority having jurisdiction.
The owner is solely responsible for maintaining the water spray system and components therein, so that it performs properly when required.
Foam Nozzle
Foam-Water Sprinklers models REB-015U and REI-015U are open and air aspirating type. They are used in deluge foam systems. The Foam-Water Sprinkler has standard orifice with K-factor of 42.
Foam-Water Sprinklers are designed to operate at a minimum pressure of 2,2 bar (32 psi) and a maximum of 4,4 bar (64 psi). The Foam-Water Sprinkler with K-42 will deliver about 61 lpm at 2 bar pressure. The standard coverage per Foam-Water Sprinkler is 9.3m2. (100sq.ft.).
Model | REB-015U – Bronze REI-015U – Stainless Steel |
Mounting | Pendent |
Maximum Working Pressure | 12 bar (175 psi) |
Operating Pressure | 2,2 bar (32 psi) – 4,4 bar (64 psi) |
End Connection | ½” BSPT (½” NPT Optional) |
K-Factor | K-42 standard
Other K-factor can be provided as optional without UL Listing |
Discharge angle | 100° |
Finish | Natural Finish |
Weight (Approx.) | 0,5 kg |
The low expansion foam water sprinkler from AG Fire Sprinkler must be handled with special care. If the low expansion foam water sprinkler is damaged should not be installed.
The sprinkler must to be tightened in to fitting using Teflon tape on the male thread of the sprinkler to seal the fitting. If the torque applied is excessive it could cause serious damage to sprinkler arms and the deflector which may affect spray pattern of the nozzle and its performance.
The foam spray system should be inspected regularly by a qualified and authorised technician. The nozzle must be checked for atmospheric effects, external and internal obstruction, blockage if any. The nozzles should be cleaned or replaced in case it would be required. The system must be operated with optimum water flow, at least, twice in a year or as per the provisions of NFPA or as per authority having jurisdiction.
The owner is the only responsible for the testing, inspection and maintenance of the Foam-Water Sprinkler and system.
OSY2 Supervisory Switch
The OSY2 is used to monitor the open position of an outside Screw and Yoke (OS & Y) type gate valve.
- NEMA 3R-rated enclosure
- User-friendly mounting bracket fits newer valve yokes
- Single side conduit entry does not require right angle fittings
- Adjustable length actuator eliminates the need for cutting the shaft
- Accommodates up to 12 AWG wire
- Three position switch monitors vandal and valve close signals
- Two SPDT contacts are enclosed in a durable terminal block for added strength
- 100 percent synchronization activates both alarm panel and local bell simultaneously.
Water Motor Alarm
AG`s Model WM Water Motor Alarms are hydraulically operated indoor and outdoor alarms for use with fire protection systems. They are light yet durable, and can be used in conjunction with alarm check, dry pipe, deluge, and pre-action valves to sound a local alarm.
This water-powered system eliminates the need for an electrical alarm and will operate even if electrical power is lost.
Model | WM |
Material | Body: Cast aluminum |
Working water pressure range | 7 to 300 psi (0,5 to 20,7 bar) |
Finish | Fire Red RAL 3000 |
AG`s Model WM Water Motor Alarm features a one-gong system which sounds an alarm outside or inside the building. The water Motor Alarms is suitable for mounting to any type of rigid wall and can accommodate a wall thickness up to 16” (406.4 mm). They are provided with a listed and approved strainer for use in the alarm line. The Gong, Gong Mount, and Water Motor Housing are fabricated from corrosion-resistant cast aluminum. The polymer drive bearings do not require lubrication. The WM utilizes a lightweight impeller design which can produce a very high decibel sound level. As water passes through the water motor, the impeller turns and the shaft rotate. The rotating shaft drives a striker assembly which rings the gong, sounding a continuous alarm as long as the water flow continues.
Alarm Check Valve
The AG Sprinkler Model H-1, H-2 and H-3 Alarm Check Valves are used in wet pipe fire sprinkler systems. They primarily serve a dual purpose in that they prevent a reverse flow of water through their bodies (non-return) and also provide for the use of a hydraulic fire alarm which is not dependent upon an electrical power supply for its operation.
Through the use of a hydraulic retard chamber a time delay is provided to eliminate potential false alarms caused by fluctuating water supply pressures. Where constant pressure water supplies are used the retard chamber (time delay) is not necessary. By incorporating the use of electrical pressure switches, other supplemental alarms, annunciators etc. may also be used.
Models | H-1 Flange / flange H-2 Groove / groove H-3 Flange / groove |
Dimensions | 3” (80 mm), 4” (100 mm), 6” (150 mm) & 8” (200 mm) |
Working water pressure rating | 175 psi (12 bar) |
Factory tested hydrostatically | 350 psi (24 bar) |
Materials | Body: high tensile strength iron: Iron ASTM A48 Interior operating parts: highly corrosive-resistant alloys Rubber parts: selective material which have good abrasive resistance and long life expectancy in terms of resiliency |
Installation | 3″, 4″ & 6” valves: vertical and horizontal installation 8” valves: vertical installation |
Trim | For constant and variable water pressure supply |
When there is an important water flow, for example from an opened sprinkler, the clapper of the alarm check valve opens and allow the water to enter in the system. Simultaneously, the water enters in the intermediate chamber, which allows the water to activate the motor gong or other water alarms installed. These alarms continue to sound until the water flow stops.
Latching Clapper Deluge Valve
The Model AGCX from AG Fire Sprinkler Deluge Valve is a hydraulically operated, latching clapper-type valve used to control the water supply to a deluge or pre-action system. Deluge systems use open sprinklers or nozzles as discharge outlets in the fire area, while pre-action systems use closed sprinklers or nozzles. Both systems use separate detection devices to control the operation of the Deluge Valve.
The AG Model AGCX Deluge Valve can be reset externally, without cover removal. This is accomplished by pushing in and turning the external reset knob at the rear of the Deluge Valve.
Model | AGCX |
Material | Ductile Iron (D) Stainless Steel (SS) |
Nominal Size | D Grooved: 2” (50 mm), 2 ½“ (65 mm) & 3” (80 mm) D & SS Flanged: 4” (100 mm), 6” (150 mm) & 8” (200 mm) |
Rated Working Pressure | D: 250 psi (17,2 bar) for 2”, 2½”, 3”, 8” valve sizes 300 psi (20,7 bar) for 4” & 6” valve sizes SS: 250 psi (17,2 bar) |
Factory tested to a hydrostatic pressure | 500 psi (34,5 bar) for 250 psi (17,2 bar) pressure service 600 psi (41,4 bar) for 300 psi (20,7 bar) pressure service |
Installation Position | Vertical mounting |
End and Trim Connection | ANSI/AWWA C606 grooved inlet and outlet (2”, 2 ½” & 3”) Threaded openings Per ANSI B 2.1 Flange connection: ANSI B 16.5 Class 150 (4”, 6” & 8”) ISO 7005-2 PN16 (only for Ductile Iron Model) |
CV Factor | 2” (50 mm): 101 2 ½“ (65 mm): 236 3” (80 mm): 254 4” (100 mm): 469 6” (150 mm): 886 8” (200 mm): 1516 |
Finish | Red RAL 3000 |
The Model AGCX electro-pneumatic from AG Fire Sprinkler is used in cases where it is advantageous to keep the solenoid dry, such as seawater installations.
Electro-pneumatic operation uses a pilot line containing air under pressure connected to a solenoid valve. This pressurised line is also connected to a Dry Pilot Line Actuator.
The dry pilot line actuator functions very much like a miniature dry pipe valve. In areas where moisture-laden air could cause freezing or other problems in the dry pilot line, the use of a cylinder of dry compressed gas such as nitrogen is suggested. Approved gas handling regulators and connections are then recommended.
When the solenoid valve on the dry pilot line actuates, the air pressure is reduced, thus opening the Dry Pilot Line Actuator, which releases the Model AGCX Deluge Valve.
Alarm Pressure Switches
Pressure water flow switches model PS10 has been designed to be installed on a fire sprinkler system. It is suitable for indoor or outdoor service with a NEMA 4/IP66 rating.
Models | PS10-1 Pressure switch with one set SPDT contact PS10-2 Pressure switch with two sets SPDT contacts |
Conduit Entrance | Two knockouts provided for 1/2″ conduit. Individual switch compartments and ground screws suitable for dissimilar voltages |
Enclosure | Cover: Die-cast with textured red powder coat finish, single cover screw and rain lip. Base: Die-cast |
Pressure Connection | Nylon ½” NPT Male |
Factory Adjustment | 4 to 8 psi (0,27 to 0,55 bar) |
Differential | 2 psi (0,13 bar) typical |
Maximum System Pressure | 300 psi (20,68 bar) |
Switch contacts | SPDT (Form C) 10,1 Amps at 125/250V AC, 2.0 Amps at 30VDC One SPDT in PS10-1, Two SPDT in PS10-2 |
Environmental specifications | NEMA 4/IPP66 Rated Enclosure – indoor or outdoor when used with NEMA 4 conduit fittings Temperature range: – 40 to 140°F (- 40 to 60°C) |
Service use | Automatic Sprinkler NFPA – 13 One or two family dwelling NFPA – 13D Residential Occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA – 72 |
Flow Switch
The Model VSR is a vane type waterflow switch for use on wet sprinkler systems.
The VSR may also be used as a sectional waterflow detector on large systems. The VSR contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 gpm (38 lpm) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.
Model | VSR |
Nominal Piping Size | 2” DN50, 2 ½” DN65, 3” DN80, 4” DN100, 5” DN125, 6” DN150 & 8” DN200 |
Service Pressure | 450 psi (31 bar) – UL. |
Flow sensitivity range for signal | 4 to 10 gpm (15 to 38 lpm) – UL. |
Maximum Surge | 18 fps (5,5 m/s). |
Contact ratings | Two sets o SPDT (Form C) 10 A at 125/250 VAC 2 A at 30 VDC resistive 10 mA minimum at 24 VDC |
Conduit entrances | Two knockouts provided for ½” conduit Individual switch compartments suitable for dissimilar voltages |
Environmental Specifications | 40ºF to 120ºF (4.5ºC to 49ºC) – UL NEMA 4/IP54 rated enclosure suitable for indoor or outdoor use with Factory installed gasket and die-cast housing when used with appropriate conduit fitting Non-corrosive sleeve Factory installed in saddle |
Service Use | Automatic Sprinkler NFPA-13 One or two Family dwelling NFPA-13D Residential occupancy up to four stories NFPA-13R National Fire Alarm Code NFPA-72 |
The VSR switches and retard device are enclosed in a general purpose, die-cast housing.
The cover is held in place with two tamper resistant screws which require a special key for removal. A field installable cover tamper switch is available as an option which may be used to indicate unauthorised removal of the cover.
These devices may be mounted on horizontal or vertical pipe. On horizontal pipe they shall be installed on the top side of the pipe where they will be accessible. The device should not be installed within 6″ (15 cm) of a fitting which changes the direction of the water flow or within 24″ (60 cm) of a valve or drain.
NOTE: Do not leave cover off for an extended period of time.
Drain the system and drill a hole in the pipe using a hole saw in a slow speed drill. Clean the inside pipe of all growth or other material for a distance equal to the pipe diameter on either side of the hole. Roll the vane so that it may be inserted into the hole; do not bend or crease it. Insert the vane so that the arrow on the saddle points in the direction of the water flow. Take care not to damage the non-corrosive bushing in the saddle. The bushing should fit inside the hole in the pipe. Install the saddle strap and tighten nuts alternately to required torque. The vane must not rub the inside of the pipe or bind in any way.
FSD Flow Proving Aparatus
The FSD water supply Proving Apparatus has been designed around the requirements of the Automatic Sprinkler Inspection Bureau, to facilitate the periodic testing of water supply and pressure available at The Sprinkler Installation Control Valve, for various Hazard Classes.
- Robustly constructed of Cast Aluminium.
- Corrosion Resistant.
- SABS 1600/3 flange connections ensure ease of Installation and avoid damage to unit.
- Tamper Resistant, Stainless Steel orifice Plate assembly.
- Easy replacement of Orifice Plate for System Classification changes.
- Flow Gauge matched to Orifice Plate are calibrated (to ISO9002) to ensure accurate Direct Flow Readings in litres per minute for the various Hazard Classes.
- Glycerine Flow Reading Gauges to enable more accurate readings to be taken.
- Compact size with flange to flange dimensions of 300mm.
- Direct Flow Reading in litres per minute for the various Hazard Classes.
The Proving Apparatus has been approved by the A.S.I.B. for use in Sprinkler Systems designed to the following Hazard Classes:
- Ordinary Hazard 5,0 mm/min
- Extra High Hazard 7,5 mm/min
- Extra High Hazard 10,0 mm/min
Units can also be installed in parallel for higher flow requirements.
NB: Care must be taken to ensure that the A.S.I.B limitations regarding the design of drain pipework downstream of the Proving Apparatus are adhered to.
Flow Meter – LPCB Approved
LPCB approved sprinkler system flow meter that can be installed between flanges (Fireflange) or with grooved couplings (Firegroove). Unit includes integral restrictor and bleed assembly, filter and drain assembly plus spare metering glass.
The preferred installation pipe layout would include the optional full bore isolating valve upstream of the meter and a control valve down stream of the meter.
Available in various flow requirements
Units can also be installed in parallel for higher flow requirements.
NB: Care must be taken to ensure that the A.S.I.B limitations regarding the design of drain pipework downstream of the Proving Apparatus are adhered to.