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PP-Series NEMA 7 Pressure Switch
Brand: Ashcroft IncThe Ashcroft® PP Pressure Switch was designed for use with harsh applications where uncompromising protection is required.
The features of this switch along with its proven technology provide a stable, long-lasting product; ideal for satisfying pressure control, shutdown or alarm operations.
Features- Explosion Proof Enclosure
- Dual chamber design allows for field calibration to be performed safely, even with power connected
- Wide selection of switch elements and wetted materials
- Process connection options available
Specifications
Brand
Adjustment Type
- Differential Pressure Control, Single Set Point, Adjustable Deadband
- Differential Pressure Control, Single Set Point, Fixed Deadband
- Differential Pressure Control, Two Independently Adjustable Set Points, Fixed Deadband
- Factory Set (Pre-Set)
- Field Adjustable
- Pressure Control, Single Set Point, Adjustable Deadband
- Pressure Control, Single Set Point, Fixed Deadband
- Pressure Control, Two Independently Adjustable Set Points, Fixed Deadband
Ambient Temperature Range
- -29° to 65° C (-20° to 150° F)
Approvals & Certifications
- CE
- CSA
- Dual Seal
- UL
Burst Pressure
- bar: 2.41 to 965.26
- kPa: 241 to 96,526
- psig: 35 to 14,000
Burst Pressure - Compound
- bar: 27.58
- kPa: 2,758
- psig: 400
Burst Pressure - Vacuum
- bar: 27.58
- kPa: 2,758
- psig: 400
Compound Pressure
- 30” Hg (-760 mmHg) at 15 psi
Deadband, Approximate
- bar: 0.03 to 179.26
- bar: 0.03 to 24.82
- kPa: 3.44 to 2,482
- kPa: 3.45 to 17,926
- psid: 0.5 to 360
- psig: 0.50 to 2,600
Deadband, Approximate - Compound
- bar: 0.03 to 1.72
- kPa: 6.98 to 172.36
- psig: 1 to 25
Diaphragm Material
- Buna-N
- Monel
- Stainless Steel
- Teflon
- Viton
Electrical - Free Leads
- 6 Foot Leads on the Micro Switch
Electrical Connectors
- 3/4” Sealed Conduit Connection with 16” Lead Wires
- 3/4” to 1/2” Conduit Reducing Bushing
- Terminal Block
Electrical Rating
- 1/8 hp at 125 Vac/Vdc
- 10 A at 125 Vac/Vdc
- 11 A, 125/250 Vac, 5 A, 30 Vdc
- 15 A, 125/250 Vac
- 15 A, 125/250/480 Vac, 1/2 A, 125 Vdc, 1/4 A, 250 Vdc
- 6 A at 30 Vdc
Element
- Ammonia Service
- Dual Elements
- General-purpose
- Heavy Duty AC
- Heavy Duty DC
- Hermetic Seal Switch, General-purpose
- Hermetic Seal Switch, Narrow Deadband
- Hermetic Seal, Gold Contacts
- High Temperature 149° C (300° F)
- Low Level (Gold Contacts)
- Manual Reset on Decreasing Pressure
- Manual Reset on Increasing Pressure
- Narrow Deadband
- Sealed Environment Proof
Enclosure, Body Material
- Aluminum
Environmental Protection
- IP66
- NEMA 7, 9 / IP66
- NEMA 9
Mounting
- Top Mounting
NPT Connection
- 1/2” NPT Female
- 1/2” NPT Male
- 1/4” NPT Female
- 1/4” NPT Female & 1/2” NPT Male Combination
O-Ring Material
- Buna-N
- Monel
- Stainless Steel
- Teflon
- Viton
Options
- Chained Cover
- Cleaned for Oxygen
- Fire-Safe Actuator
- Fungus Proofing
- Stainless Steel Tags
Pressure Range
- bar: 0.89 to 206.84
- kPa: 7.45 to 20,684
- psig: 1.08 to 3,000
Pressure Type
- Differential
- Gauge
- Vacuum
Process Connection Material
- 316 Stainless Steel
- Epoxy Coated Carbon Steel
- Nickel-Plated Brass
Proof Pressure
- bar: 1.38 to 827
- bar: 1.49 to 551.58
- kPa: 137 to 82,737
- kPa: 149 to 55,158
- psid: 21.6 to 8,000
- psig: 20 to 12,000
Proof Pressure - Compound
- bar: 17.24
- kPa: 1,723
- psig: 250
Proof Pressure - Vacuum
- bar: 17.24
- kPa: 1,723
- psig: 250
Repeatability
- ± 1 % of Operating Range
Set Point - Decreasing
- -30” Hg to 3,000 psig
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: 30 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Set Point - Increasing
- -30” Hg to 3,000 psig
- bar: 0 to 206.8
- Inches Hg: -30 to 0
- Inches WC: 30 to 150
- kPa: 0 to 20,680
- psig: 0 to 3,000
Static Pressure
- bar: 0.37 to 68.95
- kPa: 37.23 to 6,894
- psid: 5.4 to 1,000
Switch Type
- SPDT
System Pressure
- bar: -1.02 to 551.58
- Inches Hg: -30 to 0
- Inches WC: 30 to 150
- kPa: -100 to 82,737
- psig: -14.73 to 12,000
Temperature Range
- -17° to 148° C (0° to 300° F)
Vacuum Pressure
- -30” Hg at -14.73 psig
- bar: -1.02
- kPa: -100
