This pilot-operated check valve from Danfoss (Power Solutions II LLC) is designed to meet NFPA-D03 standards. It incorporates dual pilot checks and a cracking pressure of 14.5 PSI with a pilot ratio of 3:1.
Constructed with a ductile iron body and hardened steel internal parts, this valve ensures durability and high performance. The rugged design features large flow passages, enabling high flow rates and pressure up to 4500 PSI.
The SystemStak valve aims to save installation time and reduce potential leaks thanks to its standard interface and stacked configuration. The fluid temperature ranges are suitable for petroleum oil and water-based fluids, offering versatility for various applications.
Ambient temperature functionality ranges from -4deg;F to 176deg;F, making this valve suitable for extreme environments. The valversquo;s stacking height is 1.57 inches and it includes standard Vitonreg; seals and aluminum nameplates for easy identification.
Recommended filtration requirements are ISO level 20/16 up to 3000 PSI, and ISO level 18/14 for pressures over 3000 PSI, ensuring clean hydraulic operations.
MPN: DGMPC-3-ABK-BAK-41
Supplier Part Number: 694400
Specifications
Cracking Pressure (psi)
14.50
Brand
DANFOSS POWER SOLUTIONS II LLC (VICKERS)
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Function
Dual Pilot Check
Key
A
Pilot Ratio
3:1
Supplier Part Number
694400
Alternate Part Numbers
Alternate Part Number91038004, Alternate Part Number C1BY42, Alternate Part Number DGMPC3ABKBAK41
How does the 3:1 pilot ratio affect the valve's operation?
Answer by: Customer Support on Dec 4, 2025, 11:16 AM
The 3:1 pilot ratio in this SystemStak Pilot-Operated Check Valve means that the pilot pressure needs to be three times higher than the load pressure to open the check valve. This ratio helps ensure the valve opens only when necessary, providing reliable operation in hydraulic systems.