Gauge Sizes
252-1/2 inch
404 inch
Product page
NOSHOK
300 Series Brass Case Liquid Filled Pressure Gauges
The NOSHOK 300 Series combines a rugged die cast brass case with liquid-filled damping for applications that need stable readings, long service life and dependable performance in harsh industrial environments.
High quality, heavy-duty liquid filled gauge
Vacuum and compound ranges through 0 psi to 15,000 psi
Available in 2-1/2 inch and 4 inch gauge sizes
Die cast brass case with natural brass finish
Ready for quotationShare your range, connection and case requirement.
Talk to ATHApplicationsAutomotive, construction, hydraulics and pneumatics, mining, stamping and forming presses, and transportation
Case optionsBrass bottom connection and brass back connection
Pressure rangesVacuum and compound ranges through 0 psi to 15,000 psi
Part number example40 - 300 - 3000-psi - 1/2 - BT3
Technical data
Selection and ordering reference
Use this technical layout to narrow size, case style, pressure range and option codes before requesting a quotation.
Gauge sizes2-1/2 inch, 4 inch
Pressure rangeVacuum through 15,000 psi
Case typesBrass bottom or back connection
Connection sizes1/4 inch, 1/2 inch, SAE adjustable
Case Types
300Brass, bottom connection
310Brass, back connection
Pressure Ranges
30vac-30 inHg to 0 psi
30/15-30 inHg to 0 to 15 psi
30/300-30 inHg to 0 to 300 psi
3000 psi to 300 psi
10000 psi to 1,000 psi
20000 psi to 2,000 psi
Scale Options
psipsi single scale
psi/kPapsi/kPa dual scale
psi/kg/cm2psi/kg/cm2 dual scale
psi/barpsi/bar scale
Connection Sizes
1/41/4 inch NPT
1/21/2 inch NPT
SSTSAE J1926-3/7/16-20 adjustable
Popular Options
CFFChrome front flange
RFRear flange
GLOGlass lens overlay
CCRChrome cover ring
MIPMaximum indicating pointer
LMLaser marking
Part number example
40 - 300 - 3000-psi - 1/2 - BT3
40Gauge size4 inch
300Case typeBrass, bottom connection
3000-psiPressure range0 psi to 3,000 psi
1/2Connection size1/2 inch NPT
BT3OptionBrass threaded orifice 0.3 mm
Technical specifications
Pressure rangesVacuum and compound ranges through 0 psi to 15,000 psi
Accuracy25-300 and 25-310: +/-1.6% full scale; 40-300 and 40-310: +/-1% full scale
Temperature rangesMedia -4 F to 140 F, ambient 0 F to 160 F, optional temperature ratings from -40 F to 212 F
Measuring elementCopper alloy C tube, copper alloy coiled safety tube, or 316 stainless steel coiled safety tube
Connections1/4 inch NPT, 1/2 inch NPT, and 7/16-20 SAE adjustable depending on model
Operating notes
Consult your local NOSHOK distributor or NOSHOK, Inc. for availability and delivery information.
Cleaning for Oxygen Service (O2) is available only for dry or HL filled gauges.
GY40 fill is standard for liquid filled gauges.
Product Description
High quality, heavy-duty liquid filled gauge
Vacuum and compound ranges through 0 psi to 15,000 psi
2-1/2 inch and 4 inch gauge sizes
Die cast brass case with natural brass finish
Copper alloy or 316 stainless steel wetted parts
Ideal for automotive, construction, hydraulics and pneumatics, mining, stamping and forming presses, and transportation
Ordering Information
Sizes25 = 2-1/2 inch, 40 = 4 inch
Case types300 = brass bottom connection, 310 = brass back connection
Pressure rangesVacuum / compound and positive pressure options from -30 inHg to 0 psi up to 0 to 15,000 psi
Scale optionspsi single scale, psi/kPa dual scale, psi/kg/cm2 dual scale and psi/bar
Connection sizes1/4 inch NPT, 1/2 inch NPT and SAE J1926-3/7/16-20 adjustable
OptionsFront flanges, rear flanges, cover rings, overlay lens options, maximum indicating pointer, laser marking and more
Part Number Example
Example40 - 300 - 3000-psi - 1/2 - BT3
Gauge size40 = 4 inch
Case type300 = brass, bottom connection
Pressure range and scale3000-psi = 0 psi to 3,000 psi
Connection size1/2 = 1/2 inch NPT
OptionBT3 = Brass threaded orifice 0.3 mm
Product Specifications
Pressure ranges300 Series (all): vacuum and compound ranges through 0 psi to 15,000 psi
Accuracy25-300 and 25-310: +/-1.6% full scale; 40-300 and 40-310: +/-1% full scale
Temperature rangesMedia -4 F to 140 F, ambient 0 F to 160 F, with optional temperature ratings from -40 F to 212 F available
Measuring elementCopper alloy C tube, copper alloy coiled safety tube, or 316 stainless steel coiled safety tube depending on range
Connection1/4 inch NPT die-cast brass, 1/2 inch NPT, and 7/16-20 SAE adjustable available on many ranges
Operating Notes
Please consult your local NOSHOK distributor or NOSHOK, Inc. for availability and delivery information.
Cleaning for Oxygen Service (O2) is available only for dry or HL filled gauges.
GY40 fill is standard for liquid filled gauges.