YSP Series is a low-pressure wye connector made of FDA-listed Natural Polypropylene. This wye connector comes in six equal barb sizes: 1/8 inch, 3/16 inch, 1/4 inch, 5/16 inch, 3/8 inch, and 1/2 inch. The maximum pressure is 20 psi and the maximum working temperature is 198˚F. This wye is autoclavable.