US Gauge 1555, 1558 Data Sheet

Product Data

LIQUID FILLED GAUGES

Model 1555/1558 4" (100mm) Gauges,
SST Case with Brass Internals

3LFG -

DESCRIPTION

Model 1555 and Model 1558 4" (100mm) liquid filled
gauges combine low cost and high accuracy with a rug­ged stainless steel case and brass internals for corrosive
and high vibration environments. Typical applications in­clude: pumps, compressors, HVAC, petrochemical pro­cessing, and power generation.

The 4" design is available in stem (Model 1555) or
panel mount (Model 1558) configurations with brass
socket; phosphor bronze Bourdon tubes are supplied to
meet specific customer requirements.

They come in 18 vacuum, compound, and gauge
pressure ranges (see spec number selection chart).
Glycerin is standard fill fluid, with silicone or mineral oil
available on request. Dry (unfilled) gauges can also be
supplied, off-the-shelf, by your local stocking AMETEK
U.S. Gauge distributor.

Model 1555

SPECIFICATIONS

SIZES: 4" (100mm)

RANGES: Vacuum – 30"-0 Hg VAC (counterclockwise rotation

with increasing vacuum)

Compound – 30" Hg VAC-0, 0-15 through 0-100 psi

Gauge – 0-15 psi through 0-6000 psi

ACCURACY: ±1.6% FS

BOURDON TUBE: Phosphor bronze

WINDOW: Polycarbonate, sealed to case with a polychloroprene

gasket

MOVEMENT: Brass

DIAL: White aluminum with black markings; black psi inner

scale and kPa outer scale

POINTER: Black aluminum

CASE AND RING:

For Stem Mounting:
300 Series stainless steel, solid back case with stainless steel
crimped ring. BUNA-N multi-function plug with removable
nipple for venting, pressure relief, and liquid fill access

For Panel Mount Units:
Incorporate 3-hole stainless steel front mounting flange
(Model 1558)

CONNECTION: Brass, 1/4-NPT LM and CBM; 1/2-NPT LM

RESTRICTOR: Brass, push type .018" orifice (400 psi and above)

Low Pressure Vent Plug

A vent plug with pop-up pin is
used for all low pressure gauges,
from 30" Hg to 30 psi. For gauges
in pressure ranges of 60 psi and
above a standard one piece black

Model 1558

BUNA-N plug is used.

Model Selection Chart

Model Number Mounting Connection Socket Bourdon Tube Case Ring

1555 Stem 1/2-NPT LM Brass Phosphor Bronze Stainless Steel SST Crimped

1555 Stem 1/4-NPT LM Brass Phosphor Bronze Stainless Steel SST Crimped

1558 Front Flanged Panel 1/4-NPT CBM Brass Phosphor Bronze Stainless Steel SST Crimped

On-line order fax: [phone] or e-mail: [e-mail]

Sales/Technical Support: [phone] | 205 Keith Valley Road | Horsham PA 19044 U.S.A.

© 2013, by AMETEK, Inc. All rights reserved. Printed in the U.S.A. PDF513 (160174)

Specifications are subject to change without notice. Visit our Web site for the most up-to-date information.

www.ametekusg.com

Product Data

D

(CBM)

LIQUID FILLED GAUGES

Model 1555/1558 4" (100mm) Gauges,
SST Case with Brass Internals

A C C1

W

INCHES

B

E

(MM)

ØM

ØN

A*

ØK

(HEX)

4LFG -

Ø

3 x ØJ

G

(G1)

Center Back Mount

Lower Mount

(LM)

W

(HEX)

T

Front Flange

(CBM/FF)

Models 1555/1558 Dimensions

Dial Sizes Unit A B C C1 D E G G1 K J N M T W

4"

inches mm3.54

89.9

2.89

73.4

1.26

32.0

1.33

33.8

3.89

98.8

0.41

10.4

2.35

59.7

(2.67)
(67.8)

4.12

104.7

0.24

6.1

4.65

118.1

5.1

129.5

0.25

6.4

Spec Number Selection Chart

Series 1550 (4")

Stem Mounting 1/2-14 NPT

Lower Mount Connection

Stem Mounting 1/4-18 NPT

Lower Mount Connection

Bourdon Tube Phosphor Bronze Phosphor Bronze Phosphor Bronze

Connection Brass Brass Brass

Model Number 1555 1555 1558

Ranges Spec No. Spec No. Spec No.

0-30" Hg VAC – 171967A 171985A

30"-0-15 psi – 171968A 171986A

30"-0-30 psi – 171969A 171987A

30"-0-60 psi – 171970A 171988A

30"-0-100 psi – 171971A 171989A

0-15 psi – 171972A 171990A

0-30 psi 173183A 171973A 171991A

0-60 psi 173184A 171974A 171992A

0-100 psi 173185A 171975A 171993A

0-160 psi 173186A 171976A 171994A

0-200 psi – 171977A 171995A

0-300 psi – 171978A 171996A

0-600 psi – 171979A 171997A

0-1000 psi 173187A 171980A 171998A

0-1500 psi 173188A 171981A 171999A

0-2000 psi 173189A 171982A 172000A

0-3000 psi 173190A 171983A 172001A

0-5000 psi 173191A – –

0-6000 psi – 171984A 172002A

All gauges are stocked dry at our distribution center. For factory liquid filling please add the following letters after the spec number when ordering:

• LG - for liquid-filled with glycerin • LS - for liquid-filled with silicone • LM - for liquid-filled with mineral oil

Front Flange Panel

Mounting 1/4-18 NPT Center

Back Mount Connection

0.55

14.0

On-line order fax: [phone] or e-mail: [e-mail]

Sales/Technical Support: [phone] | 205 Keith Valley Road | Horsham PA 19044 U.S.A.

© 2013, by AMETEK, Inc. All rights reserved. Printed in the U.S.A. PDF513 (160174)

Specifications are subject to change without notice. Visit our Web site for the most up-to-date information.

www.ametekusg.com