Features: - Highly durable and fatigue resistant. - Can be used with a variety of chemicals & gases. However, when using other than water or air, please refer to the Chemical Compatability Tables, or consult our representative. -Do not apply excessive vibration, torque, shock, or other strong loads on the fittings. The valve body may be damaged or collects may be dislocated. Color: - Inch size - White acetal copolymer. - Metric size - Black acetal copolymer.