VD10A Series SALAMI VD10A/U4S

Optimal fluid viscosity for the VD10A Series is between 12 cSt and 75 cSt, though it can handle a minimum of 10 cSt and a maximum of 460 cSt. Keep in mind the technical data was collected using mineral oil with a viscosity of 16 cSt.

At 3,800 PSI on the P port, you're sitting comfortably under the 4,000 PSI maximum rated for that port. The A and B ports are actually rated even higher, up to 4,500 PSI, so those won't be a concern either. Just keep an eye on your return line pressure and make sure it stays under 363 PSI at the T port outlet, because that limit is a separate consideration from the working pressure rating.

Optimal performance for this valve outlet is achieved when using fluid with a viscosity between 12 cSt and 75 cSt. It can handle a minimum of 10 cSt and a maximum of 460 cSt.

For flow, you are right at its rated capacity since the VD10A outlet section is listed at 32 GPM. Keeping the oil in the stated viscosity window helps it behave like it should, with 12 to 75 cSt called out as the optimal range.

Ports A and B are rated up to 4500 PSI, while port P tops out at 4000 PSI. Back pressure on the tank port T is limited to 363 PSI, so keep that in mind when sizing your return line. Those are hard limits based on the published specs for this unit.