Emerson FISHER F180 Series Bedienungsanleitung

F180 Series

D450016T012

Instruction Manual

MCK-1094

February 2008

www.emersonprocess.com/regulators/lp

F180 Series Excess Flow Valves for

Compressed Air Service

WARNING

Failure to follow these instructions or to

properly install and maintain this

equipment could result in property

damage and personal injury or death.

Fisher®equipment must be installed,

operated, and maintained in accordance

with federal, state, and local codes and

Fisher instructions.

Only personnel trained in the proper

procedures, codes, standards, and

regulations of the applicable industries

should install and service this equipment.

WARNING

A break or leak downstream of an

excess ow valve that does not allow a

ow equal to the valve ow rating will

not actuate the excess ow valve and

could result in property damage or

personal injury from a whipping hose or

high volume discharge of air. For this

reason the operator must be familiar

with the system shutoff valves and close

the system if an emergency occurs.

Introduction

Scope of Manual

This instruction manual covers installation and

maintenance for F180 Series excess ow valves used

on compressed air service.

Figure 1. F180 Series Excess Flow Valves

TYPE F186

TYPE F187

TYPE F188

F180 Series

Specications

Description

Excess ow check valves close when the ow rate

of air exceeds the valve’s rated ow capacity. They

are used to protect against the dangers of a whipping

hose. The valves are available in a variety of sizes

and body congurations.

When ow exceeds the valve’s setting, the valve

closes and remains closed until the system equalizes.

A built-in equalizing passage automatically opens the

valve once pressures on both sides of the poppet

are equal.

Specications

CAUTION

If the valve is to be used in service other

than compressed air, contact the factory

to determine if the valve materials are

suitable for the particular service.

Valves with brass materials must

not be used on anhydrous ammonia

(NH3) service.

Installation

CAUTION

Do not install the valve in any hose or

piping which tends to restrict the valve

inlet. This may prevent the excess ow

valve from closing.

Flow through the excess ow valve must

be in the same direction as the ow

arrow stamped on the valve.

1. A rule of thumb for sizing excess ow valves is

to choose a valve with a closing ow 1.5 times the

maximum operating ow. For surge conditions,

2 times maximum ow may be required.

However, the excess ow valve’s closing ow rate

must be less than the capacity of the compressed

air system in which the valve is being used. The ow

rating of the piping, ttings, pump, valves, and hose

on both the inlet and outlet of the excess ow valve

must be greater than the ow rating of the excess ow

valve. If branching, piping length, additional valves,

reduction in pipe size, elbows, or other necessary

TYPE

INLET

CONNECTION,

INCHES

OUTLET

CONNECTION,

INCHES

MATERIAL

CLOSING

FLOW,

AIR SCFM

(meters3/min) AT

100 PSIG

(6,9 bar) INLET

PRESSURE

CLOSING FLOW

DIFFERENTIAL

PRESSURE,

PSIG (bar)

BODY LENGTH,

INCHES (cm)

WRENCH HEX,

INCHES (cm)

F186-06-1 3/4 MNPT 3/4 FNPT Brass 171 (4,8) 11 (0,76) 1.85 (4,7) 1.31 (3,3)

F187-08-1 1 FNPT 1 FNPT Brass 189 (5,4) 3.3 (0,23) 3.47 (8,8) 1.75 (4,4)

F187-12-1 1-1/2 FNPT 1-1/2 FNPT Brass 416 (11,8) 4.7 (0,32) 4(10,2) 2.25 (5,7)

F187-16-1 2 FNPT 2 FNPT Brass 879 (24,9) 4.2 (0,29) 4.56 (11,6) 3(7,6)

F188-24-1 3 FNPT 3 MNPT x

2 FNPT Steel 1729 (49,0) 7.1 (0,49) 6.22 (15,8) 3.75 (9,5)

Maximum Operating Pressure: 250 psig (17,2 bar)

Maximum Differential Pressure: 15 psig (1,03 bar)

Closing Flow Tolerance: +10% to -20% of rated ow

F180 Series

components in the piping system create restrictions

which reduce the ow rating to less than that of the

excess ow valve rating, the valve will not give excess

ow protection, and additional excess ow valves must

be installed at these points.

2. Brass valves are not suitable for anhydrous

ammonia (NH3) applications.

3. Manually operate the excess ow valve’s poppet

before installation to assure parts were not

damaged in shipment or blocked with dirt or

foreign material.

4. Use pipe dope on the male threads of the valve or

the pipeline. Polytetrauoroethylene (PTFE) tape

or PTFE pipe dope compound is recommended for

the male threads of the larger valves such as the

2 and 3-inch sizes.

5. After the excess ow valve is installed, the system

should be tested for excess ow valve operation

by simulating a break downstream in the system

at the furthermost point being protected. To test

the unit, pressure the system and then open a

shutoff valve quickly at the farthest point in the

piping that the excess ow valve is intended to

protect. There should be a sudden decrease in

ow, indicating that the valve has closed and is

working properly. Because of the bleed that

permits the valve to equalize itself, a small amount

of leakage will continue after the excess ow

check closes.

6. To reopen a closed excess ow valve, close a

shutoff valve on either the upstream or

downstream piping. When pressure is equal on

both sides of the valve, it will “click” open and ow

can be resumed by opening the shutoff valve.

WARNING

Trained personnel should test the

excess ow valve in a safe location.

Excess ow closure should be checked

annually or on a regularly scheduled

basis to insure that the valve is

still functional.

Maintenance

Excess ow valves are non-repairable. Replace

non-functioning valves.

Troubleshooting

If the excess ow valve fails to close – check

the following:

1. Flow direction is the same direction as

arrow stamped on the valve.

2. Shut off valves on the inlet and outlet of the

piping are fully open.

3. Restrictions on the inlet or outlet of the excess

ow valve are restricting ow into or out of

the valve.

4. Flow capacity at point of test is not great enough

to close the excess ow valve.

5. Pipe scale, welding slag, or other debris is holding

the valve open.

Premature closing or valve chattering – check

the following:

1. Surge conditions – Increase ow slowly to

prevent surge. A larger excess closing ow may

be required.

2. Chattering – Normal ow conditions may be too

near to the closing ow rate, or ow direction is

wrong or back owing is occuring.

3. Restriction on inlet of valve.

WARNING

Back owing or owing too near to the

excess ow valve closing rate may cause

chattering which may result in excessive

wear on parts and valve failure.

F180 Series

Fisher and Fisher Regulators are marks owned by Fisher Controls International, LLC. The Emerson logo is a trademark and service mark of Emerson Electric Co. All other marks are the

property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, expressed

or implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specications of such products at any time

without notice.

Fisher does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Fisher product remains solely with

the purchaser.

Emerson Process Management

Fisher Controls International, LLC.

P.O. Box 8004

McKinney, Texas 75070, USA

Telephone: 1 (800) 558-5853

Telephone: 1 (972) 548-3574

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