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 Feature
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.