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3.2 FLOW CHARACTERISTICS OF MASTERSTREAM 1000 FIXED NOZZLE

The Masterstream 1000 Fixed Flow Nozzle is set to the desired flow by adjusting the baffle and locking it in place with a jam nut. The
nozzle is adjusted and flow tested at the factory at time of order. If the baffle is moved (for example to flush the nozzle), then the baffle
must be readjusted to obtain the desired flow. Refer to figure 3.0 for baffle position to achieve a certain flow and pressure. Figure 4 gives
relationship of flow and pressure for various orifice sizes.

FIG 4 - Nozzle flow vs. baffle turns from closed position for Masterstream Fixed Nozzle

NOZZLE FLOW (LPM)

40

60

80

8

10

12

6

4

100

120

140

160

180

1000

3000

2000

4000

5000

200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400

NOZZLE FLOW (GPM)

NOZZLE

PRESSURE

(PSI)

NOZZLE

PRESSURE

(BAR,

KP

A/100)

7 turns

6 turns

5 turns

4 turns

3 turns

2 turns

Step1: Determine flow of smooth bore nozzle.

Q

D

P

Flow water with a smooth bore nozzle and record the nozzle's size, pitot pressure and in-line pressure gauge reading. The smooth
bore nozzle's flow is calculated from the Freeman formula:

Where:

F =29.71 for English units (GPM, INCHES, PSI)

F=.667 for metric units (LPM, MM, BAR) Note: 1 BAR=100 KPA

is smooth bore nozzle flow in GPM (or LPM)

is nozzle exit diameter in INCHES (or MM)

is pitot pressure in PSI (or BAR)

nozzle

pitot

An inadequate supply of nozzle pressure and/or flow will cause an ineffective stream and can result
in injury, death or loss of property.

3.3 DETERMINING FLOW WITH PRE-PIPED MONITORS

The simplest procedure to determine flow is with a flow meter. If a flow meter is unavailable then the flow may be estimated using
pressure loss data between the nozzle and an in-line pressure gauge at the pump or considerably upstream from the nozzle. Data is
taken with a smooth bore nozzle and handheld pitot gauge. Note: equations assume no substantial change in elevation between in-
line pressure gauge and nozzle.

Q

= F x D

P

nozzle

pitot

2

WARNING

©Copyright Task Force Tips, Inc. 1998-2004

LIM-035 October 5, 2004 Rev02

Содержание MASTERSTREAM 1000 Series

Страница 1: ...Deluge Nozzles With Fixed Selectable Flow 350 500 or 750 GPM 100 PSI 1300 2000 or 3000 LPM 7 BAR 700 KPA INDUSTRIAL 250 350 500 750 1000 GPM 100 PSI 1000 GPM MAX 100 PSI 1000 1500 2000 2500 3000 4000...

Страница 2: ...an far reaching straight stream They are adjustable from straight stream to a dense fog pattern Their rugged construction is compatible with the use of fresh water as well as fire fighting foam soluti...

Страница 3: ...be carried back to the nozzle will depend on the following factors Voltage of the line or equipment Distance from the nozzle to the line or equipment Size of the stream Whether the stream is solid or...

Страница 4: ...to complete task see NFPA for minimum duration time requirements Foam logistics have been carefully planned Allow for such things as Storage of foam in a location not exposed to the hazard it protects...

Страница 5: ...zle s baffle Figure 3 gives relationship of flow and pressure for various orifice sizes The Masterstream 1000 Selectable Nozzle allows the user to select one of several orifice sizes by turning a knob...

Страница 6: ...D P Flow water with a smooth bore nozzle and record the nozzle s size pitot pressure and in line pressure gauge reading The smooth bore nozzle s flow is calculated from the Freeman formula Where F 29...

Страница 7: ...000 GPM at 100 PSI For other orifice sizes and pressures the graphs may be interpolated Notes on trajectory graphs Graphs show approximate effective stream trajectory at 30 degrees elevation in no win...

Страница 8: ...imited warranty the claimant must return the equipment to TFT at 2800 East Evans Avenue Valparaiso Indiana 46383 within a reasonable time after discovery of the defect TFT will examine the equipment I...

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