• Diaphragm and balanced valve design ensure good regulation characteristics • Non-rising adjusting knob has snap-action lock. • Standard options include non-relieving models and alternative pressure ranges. R64G Series: Body: Zinc Alloy Bonnet: Aluminium Yoke: Zinc Alloy Elastomers: Synthetic Rubber R15 Series: Body, Bonnet & Yoke: Aluminium Adjusting Knob: Acetal Resin Optional T-bar Adjusting Screw: Steel Elastomers: Synthetic Rubber Medium: Compressed Air Only Gauge Ports: G1/8 This unit is to be used in conjunction with a Ported Yoke