Model Code: 540-603-600-1 Also Known As: 540-603-600-1 Next Day Fittings is an authorized Aventics Distributor. If you have any questions about the Aventics R432027182 Air Flow Control Valves's technical information or availability please call us at: 844-323-8752Next Day Fittings is an official Aventics distributor, we can offer our customers the best pricing and factory lead times. Our trained and knowledgeable staff is always ready to help with any aspect of the Aventics product purchasing process. Whether you need assistance from a customer service agent or a product engineering expert, Next Day Fittings is your Aventics partner every step of the way.Air Flow Control Valves