9318291 | 213.40.2.5 | 7500 psi 1/4 NPT center back mount | Bourdon Tube Pressure Gauge, Copper Alloy | Heavy-duty version, liquid filling case size 2-1/2" | Wika

213.40.2.5 | 7500 psi 1/4 NPT center back mount | Bourdon Tube Pressure Gauge, Copper Alloy | Heavy-duty version, liquid filling case size 2-1/2"

Applications

• Intended for adverse service conditions where pulsation or vibration exists
• Suitable for gaseous or liquid media that will not obstruct the pressure system
• Hydraulics & compressors

Product features

• Vibration and shock resistant
• Solid forged-brass case and socket
• Pressure ranges up to 15,000 psi

Specificatons

Design
ASME B40.100 & EN 837-1

Sizes
2½” & 4” (63 & 100 mm)

Accuracy class
2½”: ± 2/1/2% of span (ASME B40.100 Grade A)
4”: ± 1% of span (ASME B40.100 Grade 1A)

Ranges
Vacuum / Compound to 200 psi
Pressure from 15 psi to 15,000 psi
or other equivalent units of pressure or vacuum

Working pressure

2½”:

Steady: 3/4 scale value
Fluctuating: 2/3 full scale value
Short time: full scale value

4”:

Steady: full scale value
Fluctuating: 0.9 x full scale value
Short time: 1.3 x full scale value

Operating temperature
Ambient: -4 °F to +140 °F (-20 °C to +60 °C) - glycerine filled
-40 °F to +140 °F (-40 °C to +60 °C) - silicone filled
Medium: max. +140 °F (+60 °C)

Temperature error
Additional error when temperature changes from reference temperature of 68 °F (20 °C) ±0.4% of span for every 18 °F (10 °K) rising or falling.

Weather protection
Weather tight (NEMA 4X / IP 66)

Pressure connection
Material: copper alloy
Lower mount (LM) or center back mount (CBM) - 2½” (63 mm)
Lower mount (LM) or lower back mount (LBM) - 4” (100 mm)
1/4” NPT or 1/2” NPT limited to wrench flat area

Bourdon tube
2½” (63 mm) < 870 psi (60 bar): C-shape copper alloy
2½” (63 mm) > 870 psi (60 bar): Helical copper alloy
4” (100 mm) < 1,000 psi (70 bar): C-shape copper alloy
4” (100 mm) > 1,000 psi (70 bar): Helical stainless steel

Movement
Copper alloy

Dial
White aluminum with black lettering, 2½” with stop pin

Pointer
Black aluminum

Case
Gold-painted forged brass with integral connection and vent plug

Bezel ring
Gold-plated ABS cover ring (2½”)
Chrome-plated brass cover ring (4”)

Window
Acrylic with Buna-N gasket

Case fill
Glycerine 99.7%

Optional extras

• Brass restrictor
• Front or rear flange
• U-clamp mounting
• Laminated safety glass or flat glass window
• Red drag pointer or mark pointer
• Silicone or Halocarbon Oil case filling
• Special connections limited to wrench flat area
• Custom dial layout
• Other pressure scales available bar, kPa, MPa, kg/cm² and dual scales