FLGV Series Valve Flange Protectors FLGV Series valve flange protectors are engineered with a tapered body and wide flange to protect entire machined surface from dirt and contaminants. The protectors only fit a schedule 40 pipe. Material: Low-Density Polyethylene Color: Orange Note: Does not cover bolt holes. EPN-305 Series Push-In Protectors EPN-305 Series push-in protectors feature a universal design which enables use on a variety of flanges and classifications. Meets ANSI 16.5 DIN 2627-2638 (see chart). Material: Linear Low-Density Polyethylene Color: Yellow 376 * For other material and color options, contact customer service.