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 |