butterfly valve shaft won't rotate

	Any combination of the following may prevent the valve shaft from rotating:
		The actuator is not working
		Replace or repair the actuator as required. Please contact Velan Field Engineering Services for assistance.

		The valve is packed with debris
		Cycle the valve and then flush to remove debris. A full cleaning may be required if flushing the valve does not improve valve shaft rotation.

		The shaft key has sheared
		Contact Velan Field Engineering Services as a replacement shaft key is required.