SPECIFICATIONS

● Body Type: Wafer, Lug, Double Flanged, Buttweld

● Body: CS, SS

● Disc: WCB, CF8M, CF8

● Stem: 316 SS, 410 SS, 17-4 PH, XM-19

● Seat: 13% Chrome, Stellite Gr.21

● Seal Ring: 316 SS+Graphite, 316 SS+PTFE,
Inconel 625+Graphite, 316 SS Solid Metal Seat

● Size Range: Series 4A, 4B, 4C, 4W - 3" to 48“ (DN 80 to 1200),
Series 4D, 4E, 4F, 4Y, 4G, 4H, 4J, 4K - 3" to 24“ (DN 80 to 600)

● Pressure Rating: Series 4A, 4B, 4C, 4W - Class 150,
Series 4D, 4E, 4F, 4Y - Class 300,
Series 4G, 4H, 4J, 4K - Class 600

● Leakage Class: Class VI

● Design Standard: API 609 Category B, BS EN 593

● Testing Standard: API 598, BS EN 12266-1

FEATURES

● ISO 5211 top plate for direct mounting of a wide range of actuators and gears.

● Seal ring retainer, made of identical metal as the disc, clamps and combines the seal ring rigidly on the disc face into a robust, composite unit.

● Standard hard-faced Stellite seat integral to body.

● Robust single piece stem.

● Live-loaded stem seal system by a set of Belleville springs. Rocker-shaped gland bridge compensates for uneven adjustment of gland bolts.

● SS316+Nitriding bearings with graphite rings designed to take high radial and axial stem loads, and for ingress protection.

● One-piece body.

● Replaceable laminated seal ring is located on the disc, precision machined for bi-directional sealing.