Valve, Check, 4", RF600, 1500#

• 316 stainless steel trim is compatible with a broad range of media and operating conditions

• Full-open, through-conduit design for low pressure drop and less turbulence (allowing valves to easily pass pigs and spheres)

• 90-durometer, peroxide-cured seals are compatible with a broad range of media and operating conditions

• Seals provide a bubble-tight shutoff

• Suitable for vertical flow up or horizontal installation

• All materials conform to NACE MR0175/ISO 15156

• Cast on flanges provide greater valve body integrity and fewer leak points

• API 6D Monogram (510/511 only)

• Designed in accordance with ASME B16.34 (510/511 only) 

• Valve is fire-tested to API 6FD requirements, except for 1” (25 mm) valve

• Canadian Registration Number (CRN) available upon request

• Flanges are back-faced, an extra manufacturing step that provides smoother bolting surfaces and even bolt loading

• Bolted top entry, complete with 1/2” (12.7 mm) NPT cover tap for gauges and accessories, except for 1” (25 mm) size

• In-line repairable

• Through-pin clapper shaft makes clapper removal easier, and extends valve life by transferring wear and tear to an inexpensive replaceable part