China High Quality Cast Steel Gate Valve Manufacturer – Double Parallel Gate Valve,WCB,CF8,CF3,CF8M,CF3M,LCB,LCC,LC1,PSB,BW, Pressure sealing, Butt welded,Dual plate – UNIQUE

Technical parameters and characteristics

Product	Parallel Disc Gate Valve
Nominal diameter	2" - 48"	DN50 - DN1200
Design temp.	-196℃ - 593℃
Design pressure	class 150 - 1500	PN16 - PN250
Material	A216 WCB, WCC; A217 WC6, WC9, C5, C12A; A352 LCB, LCC; A351 CF8, CF8M, CF3M, CF8C, CN3MN, CK3MCUN, CN7M; A890 4A(CD3MN), 5A(CE3MN), 6A(CD3MWCuN); ASTM B 148 C95800, C95500
Design standard	API 6D
Face to Face	ASME B16.10	EN558 series
Connection end	RF, RTJ, BW	EN1092 series
Test standard	API 598, ISO 5208	EN12266-1
Operation	Hand wheel, bevel gear, electric-AUMA, Rotork, pneumatic
Application	Power station, petroleum, tap water engineering, chemical engineering
Feature 1	Single Disc
Feature 2	Double Disc
Feature 3	SOFT seal: fire safe, double sleeve sealed, double block & bleed, self cavity relief, emergency sealant injection, diversion hole design.
Feature 4	Metal seal: double sleeve sealed, hard seat seal, double block & bleed, self cavity relief, diversion hole design.

PRODUCTION RANGE FEATURES

Slab Gate Valves are available in sizes and pressure ratings as follows: •Class 150# from 2″ through 64″ •Class 300# from 2″ through 64″ •Class 600# from 2″ through 64″ •Class 900# from 2″ through 48″ •Class 1500# from 2″ through 42″ •Class 2500# from 2″ through 24″

APPLICABLE STANDARDS

Slab Gate valves comply with API 6D / API 6D SS and all relevant international codes: •ASME B16.34 •ASME B16.25 •ASME B16.47 •Nace MR01.75 •ASME VIII Div. 1

Materials of parts

Body and Bonnet: WCB/LCB/CF8M/CF8/CF3M/CF3/WC6/WC9/CD3MN Disc:A105+ENP/LF2+ENP/F304/F316/F304L/F316L/F51 Seat:A105+ENP/LF2+ENP/F304/F316/F304L/F316L/F51 Stem: F6a/F304/F316/F304L/F316L/F51 UNIQUE Slab Gate Valve also named "Through Conduit Gate Valve" are manufactured and tested in accordance with the API6D standard.Slab Gate Valves are manufactured with a full bore port, rising stem OS&Y and with floating seats and gate, pressure energized, for a bubble tight shut off upstream and downstream under both low and high differential pressure. Double block and bleed capability and automatic relief of excess body pressure are a standard feature of this seat design. The smooth, continuous bore minimizes turbulence within the valve and when in the open position it produces a pressure drop equivalent to a portion of pipe of the same length and diameter. The seat faces are outside the flow stream and therefore protected from the erosive action of the flow. Pigs and scrapers can be run through the valve without damage