*PLUMBERSSTOCK EXPERT* responded:
Good day! Your inquiry about our Little Giant 507711 discharge pump kit is greatly appreciated. According to Little Giant, the TSW kit has a clear cover and a clear check valve. Those two things being clear, you can see what's on the inside. If you want to purchase the Little Giant 507711, feel free to click "Add to Cart", enter your zip code and you're good to go. Thank you for visiting PlumbersStock.com. Have a fantastic day!