Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...
Wafer Dual Plate Check Valve Retainerless Design
The main purpose of the Dual Plate Wafer Check Valve is to perform the work of almost any conventional valve. However, being smaller makes it lighter and, therefore, is more cost efficient to purchase, install and maintain. It is also a silent check valve; because of it's innovative design, it does not slam upon closing.
The Dual Plate Wafer Check Valve plate design and flat seat offer many advantages. The flat seat eliminates any possibility of board snaps in the seat, which snaps occur frequently in other valves. When suspended in a vertical pin, the two plates have a reduced weight which eliminates excessive wear on the plate lugs. This wear can cause the plate to collapse on the seat's open surface, causing the valve to subsequently fail.
An important feature of the Dual Plate Wafer Check Valve is that it does not depend on the pressure or flow to center the plates in relation to the sealing surface in order to make the seal.
Single plate conventional designs, even those having centering guides, require a backpressure and backflow to center the plate to the seat in order to get a non leakage adjustment. This feature becomes extremely risky in the event of reduced flow and the handling of gases at low pressure.
End Connection: RF,RTJ, BW
Pressure range: Class150~2500(PN16~PN420)
Body material: Carbon steel, Stainless steel, Alloy steel, Bronze
Design in accordance with API 594
End to end dimension as per API 594
Flange dimensions in accordance with ASME B16.5, ASME B16.47
Inspection and Test according to API 598
NACE MR-0175 Service
Availability LUG design
Availability Double Flange from 12"
Single Spring for 2" to 6"
Double Spring for 8" and up
A216 Gr. WCB, WCC, WCA, etc
Low temperature steel
A352 Gr. LCB, LCC, LC1, etc
A217 Gr. WC6, WC9, C5, C12, C12A, etc
A351 Gr. CF8, CF8M, CF3, CF3M, CF8C, etc
CN7M alloy 20, CN3M alloy 20 modified, CT15C, etc
A995 Gr. 4A, 5A, CE8MN, CD6MN, CD3MN, etc
B148 C95500, C95600, C95800, etc
M30C, M35-1, CZ100, etc
CY40 inconel 600, etc
CW2m Hastelly C4, N12MV Hastelloy B, etc
CU5MCuC Incoloy 825, CW6MC Incoloy 625, etc