Task Force Tips Pressure Relief Valve Quick guide

Manual:
Pressure Relief Valve
LIA-202 October 4, 2004 Rev 0©Copyright Task Force Tips, Inc. 2004
TASK FORCE TIPS, INC. 2800 East Evans Avenue, Valparaiso, IN 46383-6940
800-348-2686 • 219-462-6161 • Fax [phone]
www.tft.com
TASK FORCE TIPSTASK FORCE TIPS
This instruction manual is intended to familiarize firefighters and maintenance personnel with the operation, servicing and
safety procedures associated with the Pressure Relief Valve.
This manual should be kept available to all operating and maintenance personnel.
WARNING Read instruction manual before use. Operation of this device without understanding the manual and
receiving proper training is a misuse of this equipment. A person who has not read and understood all
operating and safety instructions is not qualified to operate the Pressure Relief Valve.
INSTRUCTIONS FOR SAFE OPERATION AND MAINTENANCE
1.0 MEANING OF SAFETY WORDS
A safety related message is identified by a safety alert symbol and a signal word to indicate the level of risk involved with a particular
hazard. Per ANSI standard Z535.4-1998 the definitions of the three signal words are as follows:
DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
WARNING
CAUTION
DANGER
2.0 GENERAL INFORMATION
The Pressure Relief Valve may be set to any pressure between 50 and 200 p.s.i.. Its function is to protect the pump and the supply hose
from excess pressure. The relief valve may be mounted with its opening facing the front, back, right or left. A section of tubing or pipe
may be mounted on the round spout to route the water in any direction. To install the Pressure Relief Valve;
1) Install the O-ring in the groove on the Pressure Relief Valve.
2) Install four 7/16" bolts through the Pressure Relief Valve flange. Use a drop of thread locking compound on the threads of the bolts to
prevent them from coming loose.
3.0 RELIEF VALVE SETTINGPRESSURE
To set the relief valve pressure turn the adjusting screw on the relief valve housing until the surface of the screw is
Do not cap or plug discharge opening.
even with the
desired pressure.
Adjusting
Screw
50 PSI 125 PSI
200 PSI

©Copyright Task Force Tips, Inc. 2004
TASK FORCE TIPS, INC. 2800 East Evans Avenue, Valparaiso, IN 46383-6940
800-348-2686 • 219-462-6161 • Fax [phone]
www.tft.com
4.0 RELIEF VALVE FLOW vs. PRESSURE CURVE
PRESSURE RELIEF VALVE PERFORMANCE
0
25
50
75
100
125
150
175
200
225
250
275
300
0 25 50 75 100 125 150 175 200
FLOW (GPM)
PRESSURE (PSI)
0
5
10
15
20
0 100 200 300 400 500 600 700
FLOW (LPM)
125 PSI SETTING
200 PSI SETTING
50 PSI SETTING
PRESSURE (BAR)
5.0 DRAWING AND PARTS LIST
1
2
3
4
5
6
7
8
9
11
12
13
14
15
Index Description QTY Part #
1 1/2-13 X 1.0 BUTTON HEAD CAP SCREW 1 VT50-13BH1.0
2 O-RING-236 3-1/4 ID 1/8 C/S 1 VO-236
3 DEBRIS WASHER 1 A1169
4 HOUSING W/OUT THDS 1 A1150***
5 5/16-18 X 3/8 SOCKET SET SCREW CUP POINT 1 VT31-18SS375
6 VALVE SEAT 1 A1168
7 PISTON -HARDCOAT 1 A1160
8 O-RING-231 2-5/8 ID 1/8 C/S 1 VO-231
9 QUAD RING 422 1.5 ID X 1/8 C/S 2 VOQ-4222
11 SPRING SEAT 1 A1166
12 RELIEF SPRING 1 A1170
13 SMALLEY RING 1 V4210
14 ADJUSTING SCREW 1 A1167
15 SPRING HOUSING 1 A1164
Pressure Relief Valve 50 - 200 psi
A1150
A1150PH
A1151
A1151PH
Housing with Waterous / Hale hole pattern. (TFT Standard)
Plain discharge.
Housing with Waterous / Hale hole pattern.
2" NPT male discharge.
Housing with Darley hole pattern.
Plain discharge.
Housing with Darley hole pattern.
2" NPT male discharge.
***Index 4 Housing Choices
LIA-202 October 4, 2004 Rev 0