Pressure and Differential Pressure Switches, Watertight and Explosion-Proof Enclosure
P-Series
This top-of-the-line Ashcroft® process switch series includes many state-of-the-art features for safety and reliability in virtually all process applications.
• Die cast aluminum enclosure is standard with NEMA 4X (weatherproof, corrosion resistant) NEMA 7 (explosion-proof enclosure Class I, Div. 1 & 2, Groups B, C & D and Class II, Div. 1 & 2, Groups E, F & G). Dual chamber design allows setpoint changes to be made safely even with power connected.
• Single or dual independently adjustable setpoints meet all setpoint requirements
• UL, CSA listed
• Fixed or adjustable deadband
• Readily available
• Standard pressure connection materials:
Pressure psi ranges- 316L stainless steel
Differential pressure ranges- Nickle plated brass
Pressure and differential inches of water ranges- Epoxy coated carbon steel
• Setpoints adjustable from 15-100% of range
Select a link under the "item" tab below to order.
| Table 1 | Table 2 | Table 3 | Table 4 | Table 5 | Table 6 | Table 7 |
| XXX | XX | X | X | XX | XXX | XX |
| Table 1 | Function |
| PPA | Pressure control, single setpoint, adjustable deadband |
| PPD | Pressure control, two independently adjustable setpoints, fixed deadband |
| PPS | Pressure control, single setpoint, fixed deadband |
| PDA | Differential pressure control, single setpoint, adjustable deadband |
| PDD | Differential pressure control, two independently adjustable setpoints, fixed deadband |
| PDS | Differential pressure control, single setpoint, fixed deadband |
| Table 2 | Enclosure |
| N7 | NEMA 7/9, IP65, watertight, corrosion resistant and explosion proof Div. 1 & 2 |
| Table 3 | Switch Element |
| Code | Description/Maximum Electrical Ratings UL/CSA Listed |
| H | General purpose |
| J | Hermetically sealed switch, general purpose |
| Single(PS) | Switch Elements UL/CSA Listed |
| K | Narrow deadband |
| F | Sealed environment proof |
| G | General purpose |
| P | Hermetically sealed switch, narrow deadband |
| J | Hermetically sealed switch, general purpose |
| Dual(PD) | Switch Elements UL/CSA Listed |
| KK | Narrow deadband |
| FF | Sealed environment proof |
| GG | General purpose |
| PP | Hermetically sealed switch, narrow deadband |
| JJ | Hermetically sealed switch, general purpose |
| Table 4 | Actuator Seal |
| Code | Material | Range |
| B | Buna N | yes | yes |
| V | Viton | yes | yes |
| T | Teflon | yes | yes |
| S | SS |
| P | Monel |
| Table 5 | Pressure Port |
| 25 | 1⁄4 NPT Female |
| 06 | 1⁄4 NPT Female and 1⁄2 NPT Male Combination |
| 07 | 1⁄2 NPT Female |
| Table 6 | Options |
| XK3 | Terminal block |
| Table 7 | Pressure Range |
| –30 in.Hg | –30 in.Hg Vacuum |
| –30 in.Hg/15 psi | –30 in.Hg/15 Compound psi |
| 30 in.H₂O | 30 in.H₂O psi |
| 60 in.H₂O | 60 in.H₂O psi |
| 100 in.H₂O | 100 in.H₂O psi |
| 150 in.H₂O | 150 in.H₂O psi |
| 15# | 15 psi |
| 30# | 30 psi |
| 60# | 60 psi |
| 100# | 100 psi |
| 200# | 200 psi |
| 400# | 400 psi |
| 600# | 600 psi |
| 1000# | 1000 psi* |
| 2000# | 2000 psi |
| 3000# | 3000 psi |
