Western Instruments, WDV-Series FWDC Coils 13135 Western Instruments, WDV-Series FWDC Coils Print 13135 Western Instruments, WDV-Series FWDC Coils Powerful portable variable control coil, FWDC magnetizing/demagnetizing output. They are the standard in oilfield drilling and production industries. 120 or 240VAC, 60Hz. Optional AC output and pulse DC (emulate HVDC field to aid in particle mobility). Contact us to discuss available options and/or receive a quote. WDV-8: Portable variable FWDC coil, 8.5” (21.6cm) ID, 12,500Amp-turn. WDV-10: Portable variable FWDC coil, 10.5” (26.7cm) ID, 12,500Amp-turn. WDV-14: Portable variable FWDC coil, 14” (35.6cm) ID, 14,000Amp-turn. WDV-16: Portable variable FWDC coil, 16” (40.6cm) ID, 16,000Amp-turn. WDV-18: Portable variable FWDC coil, 18” (45.7cm) ID, 18,000Amp-turn. WDV-25: Portable variable FWDC coil, 25” (63.5cm) ID, 24,000Amp-turn. Request for information