Ashcroft 1379 Specifications

Data Sheet

1379 Duragauge® Pressure Gauge

FEATURES

 Wide selection of bourdon tube materials,

pressure connections and pressure ranges

 Plus!™Performance dampens vibration,

shock and pulsation effects

 Customizable dial printing options

TYPICAL USES

 Refineries
 Chemical and Petrochemical Plants
 Offshore Oil Rigs
 Water and Wastewater Pressure Control
 Pulp and Water
 Mining and Metals
 Equipment Skids
 Specialized OEM Equipment
 Cryogenics

SPECIFICATIONS

Accuracy: ±0.5% of span (ASME B40.100, Grade 2A)

Sizes: 41⁄2˝, 6˝, 81⁄2˝

Range: Vacuum to 100,000 psi

Process Connection
Location:

Process Connection
Size:

Case Style: Solid front with pressure relief back

Movement: Rotary, Adjustable
Movement Materials:

Window Material:

Dial: Aluminum, white background, black pressure

Pointer: Micrometer Adjustable, Aluminum
Weather Protection: Dry case: Case not sealed, recommend for

Dampening Options: Liquid: glycerin, silicone, Halocarbon®,

Mounting: Stem, Surface, Flush

Approvals: CRN

WETTED COMPONENTS

Bourdon Tube Process Connection Materials Joints

316L SS 316L SS Welded
316L SS Steel Welded

K-Monel® 500 Tube Monel® 400 Welded

C510 Phos. Bronze Brass Silver brazed

®

Iconel

Lower, Back

1

⁄4 NPT Male, 1⁄2 NPT Male, 9⁄16 -18 UNF-2B

(high pressure connection)

400 SS, Teflon® coated pinion gear and segment
Glass (STD.), Acrylic Window (OPT.), Shatterproof

Glass (OPT.)

scale

weather protected environment only
Liquid filled or field fillable: IP66 or NEMA 4X
Hermetically sealed: IP66

PLUS!™ Performance

316L SS(60-1379 only) Welded

TM

1379

41⁄2˝, 6˝, 81⁄2˝ dial size

KEY BENEFITS

• Uncompromised standards and material integrity

• Rugged aluminum case (black epoxy coated)

• Corrosion resistance in many environments

NON-WETTED COMPONENTS

Case Ring Back Cover

Aluminum Polypropylene Polycarbonate

MIN/MAX TEMPERATURE LIMITS

Version Ambient Process Storage

™

-20°F to 200°F

(-29°C to 93°C)

-40°F to 150°F

(-40°C to 66°C)

20°F to 150°F
(-7°C to 66°C)

-40°F to 150°F

(-40°C to 66°C)

-40°F to 150°F

(-40°C to 66°C)

Dry

PLUS!

Glycerin fill

Silicone fill

Halocarbon®

fill

Note: Other than discoloration of the dial and hardening of the gasketing that may occur as ambient or
process temperatures exceeds 150°F, non-liquid-filled gauges with standard glass windows, can with­stand continuous operating temperatures up to 250°F (121°C). Liquid-filled gauges can withstand 200°F
(93°C) but glycerin fill and acrylic window will tend to yellow. Accuracy at temperatures above or below
the reference ambient temperature of 68°F (20°C) will be affected by approximately 0.4% per 25°F.
Gauges with welded joints will withstand 750°F (400°C), 450°F (232°C) with silver brazed joints for short
times without rupture, although other parts of the gauge will be destroyed and calibration will be lost.
For continuous use and for process or ambient temperatures above 250°F (121°C), a diaphragm seal or
capillary or siphon is recommended.

-20°F to 250°F

(-29°C to 121°C)

-40°F to 200°F

(-40°C to 93°C)

20°F to 150°F
(-7°C to 66°C)

-40°F to 200°F

(-40°C to 93°C)

-40°F to 200°F

(-40°C to 93°C)

-40°F to 250°F

(-40°C to 121°C)

-40°F to 150°F

(-40°C to 66°C)

0°F to 150°F

(-18°C to 66°C)

-40°F to 150°F

(-40°C to 66°C)

-40°F to 150°F

(-40°C to 66°C)

of 41

All specifications are subject to change without notice.

All sales subject to standard terms and conditions.

©2019 Ashcroft Inc. 1379_ gauge _ds1.0, Rev. E, 06/19

ashcroft.com

[e-mail]

1.800.328.8258

Data Sheet

1379 Duragauge® Pressure Gauge

ORDERING CODE Example:

Dial Size/Model Code

451379 - 41⁄2˝ aluminum case, solid front 451379
601379 - 6˝ aluminum case, solid front
851379 - 81⁄2˝ aluminum case, solid front

System (tube and process connection)

A - Bronze tube, brass process connection, max. pressure connection 1,000 psi
P - K-Monel® 500 tube, Monel® 400 process connection, max. pressure 30,000 psi
R - 316L SS tube, steel process connection, max. pressure 20,000 psi
S - 316 SS tube, 316L SS process connection, max. pressure 20,000 psi S

WW - Inconel® 718 tube, Inconel 718 process connection (50,000 to 100,00 psi ranges)

Case Design

S - Solid front case, dry
SH - Solid front case, dry, sealed, hermetically sealed (n/a 8 ½˝ size) SH
SL - Solid front case, liquid filled (glycerin std.)

Process Connection Sizes

1

02 -

⁄4 NPT Male, N/A for ranges over 20,000 psi

1

04 -

⁄2 NPT Male, N/A for ranges over 20,000 psi

9

09 -

⁄16 18 UNF-2B, high pressure fitting, standard for pressures over 20,000 psi

Process Connection Location

L - Lower L
B - Back
D - Side (3 o’clock)
E - Side connection (9 o’clock)
T - Top connection

Options (If choosing an option(s) must include a “X”)

Dampening

LL - PLUS!™ Performance LL
NZ - PLUS!™ Performance Silicone Free
GV - Silicone case fill
GX - Halocarbon® case fill
TS - Throttle screw (standard with liquid filled, hermetically sealed or PLUS!™ Performance)

Case/Ring/Dial

56 - Flush mounting ring
BF - Surface mounting bracket
TM - 2˝ pipe mounting bracket (4½˝ dial size only)
D3 - DuraVis™ Retroreflective Dial (4½˝ and dry case only)
DA - Dial marking (text marking on the dial)

Windows/Pointers

PD - Acrylic window (standard with liquid filled or hermetically sealed cases)
SG - Safety glass
NG - Non-glare glass (4
EP - Maximum pointer (adjustable, N/A with liquid filled or hermetically sealed cases)
SH - Red set hand, stationary

Other

6B - Cleaned for gaseous oxygen service
NH - Stainless Steel tag wired to case
AB - Gauges calibrated to compensate for absolute pressure
OS - Overload stop
VS - Underload stop
HY - Hydrostatic/pneumatic testing (system pressurized to 150% of rated system pressure for 5 minutes. Overload stop standard.)
C4 - Individual calibration chart (in accordance with ASME B40.100:2013. Accuracy traceable to N.I.S.T)

Range (coding examples only, see range table on page 3 for all standard ranges)

Single Scales

15# - 15 psi
1BR - 1 bar
1KSC - 1 kilograms per sq. cm
100KP - 100 kilopascal

Dual Scales

15#/BR - 15 psi inner scale, 1 bar outer scale
1BR/# - 1 bar inner scale, 15 psi outer scale

1

⁄2˝ and 6˝ cases only, N/A with liquid fill or hermetically sealed cases)

451379

S SH 04 L XLL 15#

04

X__

15#

of 42

All specifications are subject to change without notice.

All sales subject to standard terms and conditions.

©2019 Ashcroft Inc. 1379_ gauge _ds1.0, Rev. E, 06/19

ashcroft.com

[e-mail]

1.800.328.8258