Daughtridge Sales Co., Inc.

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SOLFRUNT® 1981
All-Welded Process Gauge
& Seal Assembly

GAUGE: Model 1981 with PET case, 316L
SST socket and 316L SST seamless
Bourdon tube
RANGES: From 0 to 30” Hg VAC to
0 to 5000 psi
PROCESS CONNECTION: 1/2 NPT
male connection standard, other
connections available upon request
WETTED PARTS: 316L stainless
steel, HASTELLOY® C; other materials
available upon request
SEAL FILL FLUID: DC Silicone 200 cs
standard; other fills available upon
request

PRODUCT DATA SHEETS

1981AWPGS

SOLFRUNT® 4½" 1901/1931/1911

DIAL SIZE: 4-1/2”
CASE AND RING: For Stem or Wall
Mounting: CAST ALUMINUM, BACK-
FLANGED CASE with bayonet ring, black
finish and stainless steel pressure-
relieving back
WINDOW: High temperature acrylic,
other options available
POINTER: Anodized aluminum, micro-adjustable with black finish
DIAL: Aluminum with baked white
background and black markings
MOVEMENT: Geared movement with
components of corrosion-resistant 300
series stainless steel. Movement can
be removed for examination and cleaning
without disturbing span and scale shape
adjustments
BOURDON TUBE:
1901 - Phosphor bronze/silver brazed
1931/1911 - 316L stainless steel/TIG
welded
CONNECTION: 1901 - Brass
1911 - alloy steel
1931 - 316L stainless steel,
1/2-14 ANPT standard (1/4-18 ANPT,
optional)
ACCURACY: ±0.5% of span (Grade 2A),
except where stainless steel bourdon
tubes are used in following ranges: Type
316L from 10,000 to 11,600 psi; accuracy
is ±0.5% on ascending pressure and
±1.0% on descending pressure
LIQUID FILLING: The Models 1901/
1931/1911 are also available in liquid
filled or field fillable configurations.
Please reference Spec Number
Selection Chart on page A5

PRODUCT DATA SHEETS

1901/1931/1911

SOLFRUNT® 4½" 1903/1933/1913

DIAL SIZE: 4-1/2”
CASE AND RING: For Panel Mounting:
CAST ALUMINUM, FRONT FLANGED CASE
with steel hinged ring, black finish and
pressure-relieving back
WINDOW: High temperature acrylic,
other options available
POINTER: Anodized aluminum, micro-
adjustable with black finish
DIAL: Aluminum with baked white
background and black markings
MOVEMENT: Geared ARC-LOC® with
components of corrosion-resistant 300
series stainless steel. Movement can be
removed for examination and cleaning
without disturbing span and scale shape
adjustments
BOURDON TUBE:
1903 - Phosphor bronze/silver brazed
1933/1913 - 316L stainless steel/TIG
welded
CONNECTION: 1903 - Brass
1913 - alloy steel
1933 - 316L stainless steel,
1/2-14 ANPT standard (1/4-18 ANPT,
optional)
ACCURACY: ±0.5% of span (Grade 2A),
except where stainless steel bourdon
tubes are used in following ranges: Type
316L from 10,000 to 11,600 psi; accuracy
is ±0.5% on ascending pressure and
±1.0% on descending pressure

PRODUCT DATA SHEETS

1903/1933/1913

SOLFRUNT® 6" 1901/1931/1903

SIZE: 6”
CASE AND RING: For Stem or Wall
Mounting: CAST ALUMINUM, BACK
FLANGED CASE with threaded ring, black
finish, and BUNA-N® pressure-relieving
back (Model 1901, 1931) For Panel
Mounting: CAST ALUMINUM, FRONT
FLANGED CASE with steel hinged ring
with black finish and BUNA-N pressure-
relieving back (Model 1903)
WINDOW: Acrylic
POINTER: Aluminum, micrometer
adjustable with black finish
DIAL: Aluminum, white background
and black markings
MOVEMENT: Geared ARC-LOC® with
components of corrosion resistant 300
series stainless steel. Movement can
be removed for examination and cleaning
without disturbing span and scale shape
adjustments
BOURDON TUBE:
1901/1093 - Phosphor bronze/silver
brazed;
1931 - 316L stainless steel/heli-arc
welded
CONNECTION: 1901/1903 - Brass
1931 - 316L stainless steel
1/2-14 ANPT standard (1/4-18 ANPT
optional). Tube, tip, and socket
assemblies coded per chart on page A17
RANGES: 30” Hg VAC 0-15, 30, 60,
100, 160, 200, 300, 400, 600, 1000,
1500, 2300, 3500, 6000. For figure
intervals and graduations, see the
Standard Dial Ranges charts on page A13
ACCURACY: ±0.5% of span (Grade 2A)
LIQUID FILLING: The 6" Models 1901/
1931/1911 are Not Available Liquid Filled

PRODUCT DATA SHEETS

1901/1931/1903 6"

Model 656 Open Front
Stainless Steel Pressure
Gauges

ACCURACY
Model 6562 (63 mm): +1.6% of full scale
(Grade B)
Model 6566 (100 mm): +1.0% of full scale
(Grade 1A)
PRESSURE RANGE
63 mm: 30 inch Hg to 0 psi through
0 to 10,000 psi (0 to 6000 psi on the
LBM model)
100 mm: 30 inch Hg to 0 psi through
0 to 23,000 psi
Please refer to Pressure Range Table on
page A26 for specific information
WORKING PRESSURE
Steady: 50% of full scale
Over Range Protection: 125% of full scale
WORKING TEMPERATURE
Ambient: -40°F to 140°F (-40°C to 60°C)
Fluid: -4°F to 176°F (-20°C to 80°C)
FILLING LIQUID: Glycerin, silicone,
mineral oil
PRESSURE CONNECTION:
316L stainless steel
BOURDON TUBE: 316L stainless steel
Model 6562 (63 mm): Less than or equal
to 800 psi: C type Bourdon tube
Greater than or equal to 1000 psi: Helical
type Bourdon tube
Model 6566 (100 mm): Less than or equal
to 1000 psi: C type Bourdon tube
Greater than or equal to 1500 psi: Helical
type Bourdon tube
CASE PRESSURE RELIEF
Top: Rubber disc for 63 mm
Back: Rubber disc for 100 mm
CASE AND BEZEL RING: 304 stainless
steel; bayonet type
MOVEMENT: 304 stainless steel
WINDOW
63 mm: Polycarbonate (laminated
shatter-resistant glass window optional)
100 mm: Laminated shatter-resistant
glass window
DIAL: White aluminum with black lettering
POINTER: Aluminum alloy, black painted;
contact U.S. Gauge for adjustable pointer
on 100 mm
PROCESS CONNECTION: See ordering
information page A28

PRODUCT DATA SHEETS

656

SOLFRUNT® 659 Stainless Steel Pressure Gauges

ACCURACY
Model 6592 (63 mm): ±1.6% of full scale
(Grade B)
Model 6596 (100 mm): ±1.0% of full scale
(Grade 1A)
PRESSURE RANGE
63 mm: 30 inch Hg to 0 psi through
0 to 10,000 psi
100 mm: 30 inch Hg to 0 psi through
0 to 23,000 psi
Please refer to Pressure Ranges Table
on page A23 for specific information
WORKING PRESSURE
Steady: 50% of full scale
Over Range Protection: 125% of full scale
WORKING TEMPERATURE
Ambient: -40°F to 140°F (-40°C to 60°C)
Fluid: -4°F to 176°F (-20°C to 80°C)
FILLING LIQUID: Glycerin, silicone,
mineral oil
PRESSURE CONNECTION: 316L stainless
steel
BOURDON TUBE: 316L stainless steel
Model 6592 (63 mm): Less than or equal
to 800 psi: C type Bourdon tube greater
than or equal to 1000 psi: Helical type
Bourdon tube Model 6596 (100 mm): Less
than or equal to 1000 psi: C type Bourdon
tube greater than or equal to 1500 psi:
Helical type Bourdon tube
CASE PRESSURE RELIEF: Safety back
CASE AND BEZEL RING: 304 stainless
steel; bayonet type
MOVEMENT: 304 stainless steel
WINDOW
63 mm: Polycarbonate (laminated shatter-
resistant glass window optional)
100 mm: Laminated shatter-resistant glass
window
DIAL: White aluminum with black lettering
POINTER: Aluminum alloy, black painted
PROCESS CONNECTION: See ordering
information page A26

PRODUCT DATA SHEETS

659

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