Click to expand Tap to zoom KVM Energy 3 Way PM Valve for WK1M / WK1S Units by KVM Energy - Original Spare Part 3 Way PM Valve / PM controller. Use: KVM Energy WK1S / WK1M Heat interface units. Quantity Add to Cart This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted.