SWITCH, MODIFIER: DIFFERENTIAL PRESSURE, MANUFACTURER: ASHCROFT, PART NUMBER: PPDN7 KK B 06 3000. ASSOCIATED EQUIPMENT: SAG MILL. ADDITIONAL FEATURES: EMERGENCY SYSTEM ACCUMULATOR, LUBRICATION SYSTEM, SERIES-P EXPLOSION-PROOF, PRESSURE RANGE: 3000 PSI, TWO INDEPENDENTLY ADJUSTABLE SETPOINTS, FIXED DEADBAND, N7. SETPOINTS ADJUSTABLE BETWEEN 15-100% OF THE RANGE, NARROW DEADBAND, RATED AT 15A 125/250 VAC (ESTIMATED DC RATING: 0.4A, 120 VDC, NOT UL LISTED). FREQUENCY: 50 HZ. ACTUATOR SEAL: BUNA-N (PROCESS TEMPERATURE LIMIT: -17°C TO 65°C). PROCESS CONNECTION: 1/4-INCH NPT FEMALE AND 1/2-INCH NPT MALE. PRESSURE RANGE: 3000 PSI. ENCLOSURE MATERIAL: EPOXY-COATED ALUMINUM. DEVICE FUNCTION: REGULATES PRESSURE WITHIN A SYSTEM.