DADC08-40 Pilot Operated Check Valve

DESCRIPTION

A dual pilot-operated check valve for use in blocking or load-holding circuits.

OPERATION

DADC08-40 will block flow from 1 to 2 and from 4 to 3 Flow is allowed in the opposite direction when pressure is applied to port 2 and/or port 3 .The valve has a 3:1 pilot ratio, so at least 1/3 of the load pressure at port 1 or 4 is required at the pilot lines (ports 2 or 3 ) to open the flow passage to allow flow from ports 1 or 4 . The check is spring-biased to assure holding in a static or no load condition.
Note: Orifice disc cannot be used with this product.

FEATURES

● Hardened seat for long life and low leakage.
● Low pressure drop.

RATINGS

Operating Pressure:Inlet：240 bar（3500 psi）
Flow:Rated Inlet Flow: 19 lpm (5 gpm); see performance chart
Pilot Ratio:：3:1
Check Spring Bias：1.7 bar (25 psi); Optional 9.3 bar (135 psi)
Internal Leakage: 5 drops per minute (0.25 ml per minute) at （210 bar）3000 psi
Temperature:-40℃～ 120℃（with Buna N seals）
Fluids:Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 ssu)

Cavity：