Write a review Your name* Your e-mail* (Not for publication) Rating ★★★★★ Excellent ★★★★☆ Very good ★★★☆☆ Average ★★☆☆☆ Poor ★☆☆☆☆ Terrible Your review * * — Required information John Clark Valves Ltd ← View details Portrack Grange Road, Stockton-on-Tees TS18 2PH, United Kingdom, Stockton-on-Tees, England