VK Model (Bore 85mm x stroke 70mm) Ammonia and HFCs: R717, R22, R404, R417 Style: Reciprocating Single Stage: VK4, VK6, VK8 Two Stage: VK31, VK42, VK62
VKL Model (Bore 85mm x stroke 85mm) Ammonia and HFCs: R717, R22, R404, R417 Style: Reciprocating Single Stage: VKL4, VKL6, VKL8 Two Stage: VKL31, VKL42, VKL62