Watts 1116FM User Manual
Technical Bulletin
ES-ACV-1116FM
Job Name
Job Location
Engineer
Approval
–––––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––––––
Series1116FM Angle
Fire Pump Relief Valve
Function
Automatically maintains a constant pressure in the fire protection
system by relieving excess pressure.
Features
The WATTS ACV 1116FM (Angle) Relief Valve meets all requirements for UL listed, FM Approved fire protection service. The
design and features incorporated in the WATTS ACV valves
assure accurate control, dependable performance, and long life.
Models
Model 1116FM: Angle Pattern Single Chamber Relief Valve
Also Available:
Model 116FM: Globe Pattern Single Chamber Relief Valve
Contractor
Approval
Contractor’s P.O. No.
Representative
––––––––––––––––––––––––––––––––––––––––––––
–––––––––––––––––––––––––––––––––––––––––––––
––––––––––––––––––––––––––––––––––––––––
––––––––––––––––––––––––––––––––––
1116FM Angle
Materials
Body & Cover: Ductile Iron ASTM A536
Seat (Trim): Stainless Steel CF8M - Xylan Coated
Internals: Stainless Steel S30400 or Ductile Iron
ASTM A536 Fusion Bonded Epoxy
Coated
Stem: Stainless Steel S30400 - Xylan Coated
Spring: Stainless Steel AISI S30200
Elastomers: Buna-N
Control Tubing: Copper
Fittings: Brass
Pressure Relief
Control Body:
3
4
Bronze
2
Components
1
6
CLOSES VALVE
5
FLOW
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.
OPENS VALVE
1 - Main Valve
2 - PV20C Relief Control
3 - Pressure Gauge
4 - Fixed Orifice
5 - Check Valve
6 - Flo-Clean Strainer
Valve Sizes Available in Angle and Globe
3” 4” 6” 8”
UL UL/FM UL/FM UL/FM
Sizes / Approvals
20 - 175 PSI Relief Service
100-300 PSI Relief Service
ANSI End Connections 150, 300, and 300 x 150
Operation
The WATTS ACV Model 1116FM PRESSURE RELIEF VALVE
is controlled by a Pressure Relief Control. The Pressure Relief
Control is normally closed, held closed by an adjustable spring
setting to maintain a constant inlet pressure to the main valve.
When upstream pressure increases above the relief set-point,
the Relief Control throttles open, increasing flow through the
control tubing. Pressure is decreased in the main valve cover
chamber, causing the main valve to modulate towards open,
relieving excess upstream pressure. The desired system pressure is maintained.
As the upstream pressure decreases below the relief set-point,
the Relief Control throttles closed, restricting flow through the
control tubing. Pressure is increased in the main valve cover
chamber, causing the main valve to modulate towards closed,
maintaining the desired upstream pressure. Should upstream
pressure drop below and remain below the set-point, the main
valve closes drip tight.
Ø7.875"
Ø9.968"
Ø13.25"
Ø16.00"
150 LB FLANGE
INLET
5 3/4"
6 3/4"
8 1/2"
INLET
17 1/2"
26 3/4"
24 1/2"
19 1/4"
8 200
6 150
4 100
3 80
17 3/4"
19 5/8"
27 1/4"
25"
11"
150 LB FLANGE
INLET
INCH - MM
VALVE SIZE
A
300 LB FLANGE
A
B
INLET
INLET
5 3/4"
6 3/4"
8 1/2"
6 1/8"
7 1/8"
11 1/2"
8 15/16"
11"
11 1/2"
8 15/16"
7 1/8"
6 1/8"
150 LB FLANGE
300 LB FLANGE
B
C
INLET
300 LB FLANGE
C
D
5 1/4"
5 1/2"
4"
13"
9 1/2"
9 1/2"
11"
4"
E F
Ø13.25"
Ø9.968"
Ø13.25"
Ø16.00"
8 1/2"
6 3/4"
8 1/2"
26 3/4"
24 1/2"
24 1/2"
19 1/4"
8 800
8 200
6 150
4 100
25"
19 5/8"
27 1/4"
25"
11"
6 3/4"
8 1/2"
8 1/2"
7 1/8"
11 1/2"
8 15/16"
8 15/16"
11"
11 1/2"
8 15/16"
8 15/16"
7 1/8"
5 1/2"
13"
4"
9 1/2"
11"
11"
4"
4"
1116FM (Angle) - Pressure Relief Valve
DIMENSIONS - ACV 1116FM (Angle)
C
TOP
VIEW
F
150
120
180
90
210
60
240
270
30
0
300
150 LB FLANGE
OUTLET
D
XXXX
XX
WATTS
ACV
X
B
A
Valve Size 150 Outlet 300 Outlet 150 Inlet 300 Inlet 150 Inlet 300 Inlet
A A B B C D D E F
in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm in. mm
3 80 53⁄4146 61⁄8156 53⁄4146 61⁄8156 51⁄2140 171⁄2445 173⁄4451 91⁄2241 77⁄8200
4 100 63⁄4171 71⁄8181 63⁄4171 71⁄8181 51⁄2140 191⁄4489 195⁄8498 10 254 915⁄16252
6 150 81⁄2216 815⁄16227 81⁄2216 815⁄16227 4 102 241⁄2622 25 635 11 279 131⁄4337
8 800 11 279 111⁄2292 11 279 111⁄2292 4 102 263⁄4679 271⁄4692 13 330 16 406
150 LB FLANGE
E
INLET
FIRE PUMP RELIEF VALVE
TO WASTE CONE
SUPPLY
TO FIRE
PROTECTION
SYTEM
Installation and Start-up
Start-up of an Automatic Control Valve requires following proper procedures. Time must be allowed for the valve to react
to adjustments and the system to stabilize. The objective is to bring the valve into service in a controlled manner to protect
the system from damaging overpressure.
NOTICE: Avoid mounting valves in a vertical discharge postion (valve stem horizontal or cover pointed sideways.) Valves mounted in
this position may not perform as tested and approved.
• Clear the line of slag and other debris.
• Install the valve so that the FLOW ARROW marked on the valve body matches the flow through the line.
• Install pressure gauge (supplied) in the fitting on valve tubing.
1. Turn the Relief Control adjustment screw counterclockwise (out). This lowers the initial relief set-point, allowing the set-point to be
increased to the desired setting.
2. Loosen a tube fitting at a high point on the valve. This allows the cover to vent trapped air during initial filling of the valve.
3. Start the pump to supply fluid/pressure to the valve.
4. Tighten the tubing when all air is vented from the cover as indicated by continual flow of fluid.
NOTICE: THE RELIEF SET-POINT SHOULD BE LOWER THAN DESIRED AT THIS TIME.
5. Turn the Relief Control adjustment screw clockwise (in) slowly, allowing time for the pressure to gradually increase to the desired
set-point.
USA: • Tel. (713) 943-0688 • (713) 944-9445 • www.watts.com
Loading...