Overview Reviews Product Description ASSEMBLY - 3" BUTTERFLY VALVEWITH NX04-1 SERVO. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Fireye FIREYE INC. - NX0412BV Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments