Installation Guide |
H Series |
English – May 2002 |
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Introduction |
Installation |
This installation guide provides instructions for installation, startup, and adjustment. To receive a copy of the instruction manual, contact your local Fisher Sales Office or Sales Representative or view a copy at www.FISHERregulators.com. For further information refer to:
H Series Instruction Manual, form MCK-1089, D450014T012.
P.E.D. Categories
This product may be used as a safety accessory with pressure equipment in the following Pressure Equipment Directive 97/23/EC categories. It may also be used outside of the Pressure Equipment Directive using sound engineering practice (SEP) per table below.
PRODUCT SIZE |
CATEGORIES |
FLUID TYPE |
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DN 6 (1/4-inch) NPT |
SEP |
1 |
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Specifications
Inlet Connection Size
DN 6 (1/4-inch) NPT
Maximum Allowable Relief (Inlet) Pressure(1)
29 bar (420 psig)
Fixed Relief Pressures(1)
FIXED RELIEF PRESSURE (2 ) |
RELIEF PRESSURE PLUS |
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BUILDUP |
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bar |
psig |
bar |
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psig |
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2,4 |
35 |
4,1 |
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60 |
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4,1 |
60 |
5,9 |
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85 |
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8,3 |
120 |
10 |
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145 |
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10 |
150 |
12 |
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180 |
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12 |
175 |
14 |
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210 |
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14 |
200 |
17 |
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240 |
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16 |
225 |
19 |
|
270 |
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19 |
275 |
23 |
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330 |
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24 |
350 |
29 |
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420 |
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Proof Test Pressure
All Pressure Retaining Components have been
proof tested per Directive 97/23/EC - Annex 1,
Section 7.4
Temperature Capabilities(1)
-29 to 71°C (-20 to 160°F)
Only qualified personnel should install or service a relief valve. Relief valves should be installed, operated, and maintained in accordance with international and applicable codes and regulations, and Fisher instructions.
If using a relief valve and/or backpressure regulator on a hazardous or flamable fluid service, personal injury and property damage could occur due to fire or explosion of vented fluid that may have accumulated. To prevent such injury or damage, provide piping or tubing to vent the fluid to a safe, well-ventilated area or containment vessel. Also, when venting a hazardous fluid, the piping or tubing should be located far enough away from any buildings or windows so to not create a further hazard, and the vent opening should be protected against anything that could clog it.
Personal injury, equipment damage, or leakage due to escaping fluid or bursting of pressurecontaining parts may result if this relief valve and/ or backpressure regulator is overpressured or is installed where service conditions could exceed the limits given in the Specifications section, or where conditions exceed any ratings of the adjacent piping or piping connections.
To avoid such injury or damage, provide pressurerelieving or pressure-limiting devices (as required by the appropriate code, regulation, or standard) to prevent service conditions from exceeding limits.
Additionally, physical damage to the relief valve and/or backpressure regulator could result in personal injury and property damage due to escaping fluid. To avoid such injury and damage, install the relief valve and/or backpressure regulator in a safe location.
A person should NEVER stand directly over or in front of, or look directly into a relief valve when the tank is pressurized. The relief valve could suddenly "pop" open blowing gas, dirt, and other debris into the person's face and eyes.
Any valve that has fully opened "popped" should be tested to see if it is within the allowable start- to-discharge pressure setting. If it is not within the correct range, it must be replaced. Relief valve start-to-discharge and reseat pressures may be lower if the valve has fully opened "popped."
1.The pressure/temperature limits in this installation guide and any applicable standard or code limitation should not be exceeded.
2.This is the initial leak point, the point at which the relief valve begins to discharge.
D450014TENG
www.FISHERregulators.com
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