Trunnion Mounted Ball Valve

Construction of Centro Flow Trunnion Ball Valve is of a heavy duty 2-piece bolted body structure, designed to meet or exceed the requirements of most demanding applications. Its a floating seat ring, self-relieving seat design. The seat are contained in metal carries with spring loaded against ball, while the two independent floating seat rings assures bi-directional tightness of the valve from zero differential pressure to the maximum rated pressure. When valve be in a closed position, media will be trapped in the body cavity, unless this media is drained, it will be subject to thermal expansion and contraction. During the temperature rises, the trapped media desires to expand and the pressure increases in the body cavity. In order to avoid excessive pressure built-up, the Centro Flow valve seats are designed to self-relieve, allowing the media in the body to escape into the pipeline.

CENTRO Trunnion Mounted Ball Valve Features:

Material and Main Parts

PARTS	MATERIAL
BODY	ASTM A351-CF8M 1.4408	ASTM A216-WCB 1.0619
CAP
Body Type	Flanged (RF, RTJ), Buttweld
Body	CS, SS, Duplex SS
Ball	CS + ENP, CF8M, CF3M, Duplex SS
Stem	410 SS, 316 SS, 304 SS, XM-19, Duplex SS
Seat	RTFE, PEEK, Devlon, Nylon, Viton
Seat Seal	HNBR, FKM
Size Range	2" to10“ (DN 50-DN350)
Pressure Rating	Class 150 - 1500 Full and Reduced Bores
Design Standard	API 6D, ASME B16.34
Testing Standard	API 6D, API 598, ISO 5208