China High Quality Globe Check Valve Manufacturer – Welded End Flat Gate Valve,WCB,CF8,CF3,CF8M,CF3M,LCB,LCC,LC1,high pressure,PSB,BW – UNIQUE

Technical parameters and characteristics

Product	Flat 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.

Main Features

1) The seat ring uses the floating seat ring structure with O-seal ring sealed and pre-tightening force applied to have inlet and outlet dual-way sealed, and the open-close moment with this structure is 1/2 that of the common valves only, able to lightly open and close valve. 2) When fully opened, the valve's channel is smooth and linear,with an extremely small flow resisting coefficient and no pressure loss ,and the pipeline can be cleaned with hair-ball through it . 3) Automatic removal of the high pressure in the internal cavity when the valve is about to close so as to ensure safety. 4) Fully sealed structure leaves a good protective property, suitable for the requirement of 24-hour duty.