Left unprotected for the expansion draft that off-season, the Philadelphia Flyers picked Van Impe off the Black Hawks roster. He played eight and a half seasons with the Flyers and was one of the teams best defensive blueliners, serving as the second captain in franchise history from 1968 to 1973. His forte was hitting and shot-blocking, as well as clearing opponents from the area of his team's net. He was part of the Broad Street Bullies teams that won two Stanley Cups in 1974 and 1975.
On January 11, 1976, at the Spectrum, Van Impe’s Flyers, as part of the Super Series '76, played a memorable exhibition game against the Soviet Union's dominant Central Red Army team. Having just finished serving a hooking penalty, Van Impe left the penalty box and immediately placed a devastating hit on the Soviet Union’s Valeri Kharlamov, which resulted in the Soviets leaving the ice midway through the first period in protest. After a short delay, the Soviets finally returned to the ice after they were warned that they would lose their salary for the entire series if they did not.
Van Impe's Flyer career came to an end mid-way through the 1975–76 season as he was traded to the Pittsburgh Penguins along with Bobby Taylor for Gary Inness and cash. His Penguins career lasted a mere 22 games as he retired in 1976–77.
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