Home / Penstocks / Regulating Penstocks / regulating penstocks regulating penstocks Size: DN 150 DN 200 DN 300 DN 400 DN 500 DN 600 DN 700 DN 800 DN 900 DN 1000 Add to your Wish List Request a Quote Request a Quote Close Your Name: Contact Email Address: Telephone: Message:  Please enable JavaScript in your browser to send us a message. We are a specialist supplier of standard and bespoke flow control products Rush delivery upon request Secure online payment soon available Description SS316 frame with HDPE door max 5 mwc pressure non-rising trapezium threaded stem