Hydrotechnik supply pressure adjustable pressure valves for limiting pressure and restrictor valves for protection of pressure gauges to overload. These products provide peace of mind when pressure testing aggressive applications. Downloads Analogue Pressure Gauges PDF Minimess Test Point & Hoses Brochure Brochure 2.78 MB Product Range Adjustable in-line overload gauge protection valves. Pressure Limiting Valves In-line pressure restrictor valve for adjustment to 150 bar maximum. 630 max. line pressure. Pressure Gauge Restrictor Valve Contact Us Phone+44(0) 115 900 3550 Emailsales@hydrotechnik.co.uk Pressure gauges Leave this field blank Your name Company name Email address Let us know what you are looking for