Features: * High Performance: Theses Check Valves are professionally designed to prevent backflow in vacuum and discharge pumps, which will maintain and generate the vacuum for the and should be frequently replaced. * Technical The For For Dometic For Sealand Duck Bill Valves Kit comes with two 1-1/2" duckbill valves for T and S series pumps. These valves are a critical component of the For VacuFlush . Designed to prevent flow back in vacuum and discharge pumps and should be replaced frequently. Note that S series vacuum pumps, low profile vacuum pumps, and the VG2 vacuum pumps require 4 valves (2 kits). The T series discharge pump requires 1 kit (2 valves) * Tough and Well Made: Made of premium rubber for high quality, great strength, corrosion resistance, withstand high temperature; Specifications: Condition: New Type:Duck Bill Valve Kit Number of Pieces:4 Material:Plastic Color:As shown Fitment Type:Direct Replacement Part Number:385310076 * Fitment =NO Fitment : 385310076 Duck bill Valve Kit fits for For Dometic S, T, VHT, and VG series pumps. Compatible with S12D, S12DAB, S24D, S32D, S115A, S12, 52A, S32, T12, T24, T32, VG12, VG24 model. Package Include: 4*Duck bill Valve Kit Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.