Aluminium, Brass and Stainless Steel Body
130-PA-00-OO / 130-AA-00-OO / 130-BA-00-OO / 130-SA-00-OO
Working pressure up to 500 P.S.I.G., body in your choice of polysulfone engineered plastic, aluminum, brass, or 316/316L stainless steel, all with 316 stainless steel internal wetted parts and ceramic magnet. Elastomer selection includes Buna-N (no range limitation), Viton, Silicone, Neoprene, and Ethylene Propylene options for diaphragm and seals.
Available dial sizes are 3-1/2” or 4-1/2”, with shatter-resistant lens in glass reinforced thermoplastic dial case (panel mountable), or optional anodized aluminum dial case. Full scale accuracy is ±5% (0-5” to 0-9.9” H₂O) (ASME B40.1 Grade D), and ±3/2/3% F.S. (0-10” H₂O to 0-15 PSID / 0-400” H₂O) (ASME B40.1 Grade B) (ascending) for liquid and gas applications.
Other Body Materials: Polysulfone Engineered Plastic (switches not available on plastic body)
Working pressure up to 500 P.S.I.G., body in your choice of polysulfone engineered plastic, aluminum, brass, or 316/316L stainless steel, all with 316 stainless steel internal wetted parts and ceramic magnet. Elastomer selection includes Buna-N (no range limitation), Viton, Silicone, Neoprene, and Ethylene Propylene options for diaphragm and seals.
Available dial sizes are 3-1/2” or 4-1/2”, with shatter-resistant lens in glass reinforced thermoplastic dial case (panel mountable), or optional anodized aluminum dial case. Full scale accuracy is ±5% (0-5” to 0-9.9” H₂O) (ASME B40.1 Grade D), and ±3/2/3% F.S. (0-10” H₂O to 0-15 PSID / 0-400” H₂O) (ASME B40.1 Grade B) (ascending) for liquid and gas applications.
Other Body Materials: Polysulfone Engineered Plastic (switches not available on plastic body)
Model 130 4.5 Inch Dial
Model 130 Engineered Plastic Body
Product Features and Benefits
- Rugged convoluted diaphragm design with no cross port leakage.
- Glass reinforced thermoplastic dial case; optional anodized aluminum dial case available.
- Over-range protection, accommodates both high-over-low and low-over-high conditions.
- Weather-resistant and corrosion-resistant rated to NEMA 4X/IP65 (with specific options).
- 5 Year Limited Warranty.
- Operating temperature: -40°F to +200°F (-40°C to +93°C).
- Multiple switch options including hazardous location versions; 1 or 2 independently adjustable, SPDT 3W switches (0.25 Amp, 125 VAC/VDC), CE marked (except explosion proof, which is CSA & UL listed).
- Electrical enclosures: Weather resistant NEMA 4X, hazardous location NEMA 7.
- Switches are mechanically adjustable & require no external power.
Mid-West Model 130 Differential Pressure Gauges are engineered for:
- Selective Catalytic Reduction (SCR)
- Filter and gas flow monitoring
- Water treatment and anhydrous ammonia applications
- Tank level and vacuum applications
DP Range And Accuracy
DP Range: 0-5” H₂O to 0-400” H₂O / 0-15 PSID (0-12.4 mbar to 0-1 bar)
Variety of dial scales: inches H₂O, PSID, bar, mbar, kPa, kg/cm², dual-scale, etc.
Accuracy:±5% Full Scale (ascending, 0-5″ to 0-9.9″ H₂O)
±3/2/3% Full Scale (ascending, 0-10″ H₂O to 0-15 PSID/0-400″ H₂O)
Working pressure up to 500 PSIG (34 bar)
Hermetically sealed: glass reinforced engineered plastic case, shatter resistant lens, or anodized aluminum dial case.
Variety of dial scales: inches H₂O, PSID, bar, mbar, kPa, kg/cm², dual-scale, etc.
Accuracy:±5% Full Scale (ascending, 0-5″ to 0-9.9″ H₂O)
±3/2/3% Full Scale (ascending, 0-10″ H₂O to 0-15 PSID/0-400″ H₂O)
Working pressure up to 500 PSIG (34 bar)
Hermetically sealed: glass reinforced engineered plastic case, shatter resistant lens, or anodized aluminum dial case.
Model 130 Diaphragm Gauge
Model 130 Metal Body
Common Options
DP ranges: Inches H₂O, PSID, mbar, kPa, Bar, Kg/cm², Dual Scale
Body materials: Polysulfone engineered plastic, aluminum, brass, 316/316L stainless steel
Available dials: 3-1/2”, 4-1/2” round
Seals/Diaphragm materials: Buna-N, Viton, Silicone, Neoprene, Ethylene Propylene
Process Connections: ¼” FNPT, ⅜” FNPT, and compression tube fitting options
Switch options: Up to 2 SPDT switches, NEMA 4X and explosion-proof
Mounting & performance options: 2” pipe mounting kit, wall mounting kit, maximum follower pointer, oxygen cleaning, shatterproof lens
Compliance: NACE (aluminum or stainless steel bodies), CRN (polysulfone or stainless steel bodies only)
Body materials: Polysulfone engineered plastic, aluminum, brass, 316/316L stainless steel
Available dials: 3-1/2”, 4-1/2” round
Seals/Diaphragm materials: Buna-N, Viton, Silicone, Neoprene, Ethylene Propylene
Process Connections: ¼” FNPT, ⅜” FNPT, and compression tube fitting options
Switch options: Up to 2 SPDT switches, NEMA 4X and explosion-proof
Mounting & performance options: 2” pipe mounting kit, wall mounting kit, maximum follower pointer, oxygen cleaning, shatterproof lens
Compliance: NACE (aluminum or stainless steel bodies), CRN (polysulfone or stainless steel bodies only)
Additional Options
Hazardous Locations
Explosion-proof enclosure: NEMA 7 (Class I Div I Groups C & D; Class II Div I Groups E, F & G), 3rd party certified, CSA & UL listed.
All Model 130 DP gauges either conform to and/or are designed to the requirements of:
ASME B40.1 (accuracy and performance)
NEMA Std. No. 250
CSA and UL listing (where applicable)
EN-61010-1, CE (Low Voltage & RoHS)
NACE MR0175 (where ordered)
CRN (for specific body materials)
Note: Switches are not available with the polysulfone plastic body. Factory preset switches available at no extra charge when setpoint is specified.
Explosion-proof enclosure: NEMA 7 (Class I Div I Groups C & D; Class II Div I Groups E, F & G), 3rd party certified, CSA & UL listed.
All Model 130 DP gauges either conform to and/or are designed to the requirements of:
ASME B40.1 (accuracy and performance)
NEMA Std. No. 250
CSA and UL listing (where applicable)
EN-61010-1, CE (Low Voltage & RoHS)
NACE MR0175 (where ordered)
CRN (for specific body materials)
Note: Switches are not available with the polysulfone plastic body. Factory preset switches available at no extra charge when setpoint is specified.
Model 130 Ex Enclosure
Additional Services
Custom Dial Face
Personalised dial faces tailored to your specifications.
Tagging Service
Services include stainless steel tags with wire or screw options.
Calibration Report
Calibration and accuracy certification from Mid-West or CMC.
Modification Service
Modification of existing stock units to for specific dial and electrical requirements.