US Gauge 1550, 1553 Data Sheet

Product Data

LIQUID FILLED GAUGES

Models 1550/1553 2-1/2" (63mm) and
4" (100mm) All Stainless Steel Gauges

1LFG -

DESCRIPTION

The Model 1550 and 1553 are 2-1/2" (63mm) and 4"
(100mm) affordable liquid filled gauges that have all 316
stainless steel wetted parts. They are designed to endure
the harsh environments of chemical and petrochemical
processing plants. Liquid filling extends the life of a dry
gauge in these environments by protecting the move­ment from vibration and dampening any shocks the
gauge may experience. The liquid filling also improves
readability by minimizing the vibration that is transferred
to the pointer.

Glycerin is the standard fill fluid, with silicone and
mineral oil available upon request. These gauges are
also available dry, and can be filled at a local distributor

or at your facility.

FEATURES

l Low cost all stainless steel construction

l 316 wetted parts

l Liquid filled for long gauge life in harsh environments

l Pressure ranges from 30" Hg through 0-10000 psi for

the 2-1/2" model and 30" Hg through 0-15000 psi for
the 4" model

l Lower mount (LM) in 2-1/2" and 4"; center back

mount (CBM) in 2-1/2"

l All pressure ranges in inventory

SPECIFICATIONS

SIZES: 2-1/2" (63mm) or 4" (100mm)

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

with increasing vacuum)

Compound – 30" Hg VAC-0, 0-15 through 0-300 psi

Pressure – 0-15 psi through 0-15000 psi

ACCURACY: 2-1/2" ±3-2-3% FS (Grade B); 4" ±1.0% FS
(Grade A)

BOURDON TUBE: 316 SST

WINDOW: Tempered glass, sealed with BUNA-N gasket

MOVEMENT: SST

DIAL: White aluminum with black markings; black psi inner scale

and blue kPa outer scale; custom dials available in OEM
quantities

POINTER: 63mm – black aluminum; 100mm – black aluminum,
adjustable DIN style

CASE AND RING:
63mm – For Stem or Center Back 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

100mm – For Stem Mounting:
300 Series stainless steel, bayonet type ring.

CONNECTION: 316 SST; 63mm – 1/4-NPT; 100mm – 1/2-NPT

RESTRICTOR: Optional 316 SST, threaded style

Model 1553

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
BUNA-N plug is used.

Model 1550

Model Selection Chart

Model Number Dial Sizes Mounting Connection Socket Bourdon Tube Case Ring

1550 2-1/2" Stem 1/4-NPT LM 316 SST 316 SST Stainless Steel SST Crimped

1553 2-1/2" Center Back 1/4-NPT CBM 316 SST 316 SST Stainless Steel SST Crimped

1550 4" Stem 1/2-NPT LM 316 SST 316 SST Stainless Steel Bayonet Type

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

8

)

1.91

Lower Mount (LM)

Lower Mount (LM)

Center Back Mount (CBM)

LIQUID FILLED GAUGES

Models 1550/1553 2-1/2” (63mm) and
4” (100mm) All Stainless Steel Gauges

2.45

(62.2)

1.30

(33.0)

4.0

(101.6)

(48.5)

2LFG -

3.33

(84.6)

Ø3.98

(101.1)

.65

(16.5)

0.67

(17.0)

0.48

(12.2)

psi

2.30

(58.4)

2-1/2” (63mm)

0.37
(9.4)

0.41

(10.4)

Ø2.67
(67.8)

0.48

(11.1)

1.36

(34.5)

2.45

(62.2)

2-1/2” (63mm)

Ø2.45
(62.1)

INCHES

(MM)

0.66

(16.8)

4” (100mm)

Spec Number Selection Chart

Size Gauge 2-1/2” (63mm) 2-1/2” (63mm) 4” (100mm)

Connection 1/4-18 NPT LM Connection 1/4-18 NPT CBM Connection 1/2-14 NPT LM Connection

Bourdon Tube Material 316L SST 316L SST 316L SST

Socket Material 316L SST 316L SST 316L SST

Model No. 1550 1553 1550

Ranges Spec No. Spec No. Spec No.

30" Hg VAC 253000A 253027A 254000A
30"-0-15 253001A 253028A 254001A
30"-0-30 253002A 253029A 254002A
30"-0-60 253003A 253030A 254003A
30"-0-100 253004A 253031A 254004A
30"-0-150 253005A 253032A 254005A
30"-0-200 253006A 253033A 254006A
30"-0-300 253007A 253034A 254007A
0-15 psi 253008A 253035A 254008A
0-30 psi 253009A 253036A 254009A
0-60 psi 253010A 253037A 254010A
0-100 psi 253011A 253038A 254011A
0-160 psi 253012A 253039A 254012A
0-200 psi 253013A 253040A 254013A
0-300 psi 253014A 253041A 254014A
0-400 psi 253015A 253042A 254015A
0-600 psi 253016A 253043A 254016A
0-800 psi 253017A 253044A 254017A
0-1000 psi 253018A 253045A 254018A
0-1500 psi 253019A 253046A 254019A
0-2000 psi 253020A 253047A 254020A
0-3000 psi 253021A 253048A 254021A
0-4000 psi 253022A 253049A 254022A
0-5000 psi 253023A 253050A 254023A
0-6000 psi 253024A 253051A 254024A
0-10000 psi 253025A – 254025A
0-15000 psi – – 254026A

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

Ø3.87
(98.3)

0.3
(9.7

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