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DS8P1 & DT8P1 Series Inline Check Valve, 1-1/4 NPT Ports, 5 PSI Cracking Pressure, Up To 50.00 GPM

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Description & Features

Engineered for optimal hydraulic performance these Vickers by Danfoss / Eaton DT8P1-10 11 Design Check Valves ensure reliable unidirectional fluid flow. The robust steel body construction withstands pressures up to 3000 PSI.

Featuring 1-1/4 NPT ports and a 5 PSI cracking pressure these check valves support a flow rate of up to 50.00 GPM. The stability under pressure and minimal maintenance requirements make them ideal for demanding environments such as die casting foundry marine and turbine control applications.

Designed without elastomer seals these valves provide standard leakage protection ensuring durability and efficient operation. Suitable for low shock service these check valves should not be used to counteract high-velocity reverse flows that result in shock conditions.

Model Number: DT8P1-10-5-11

Supplier Part Number: 125667

Specifications

A
5.25
Application
Die casting & foundry, Machine tool, Marine/Offshore, Press, Primary metal, paper, Test equipment & simulation, Turbine control (wind, steam, water)
B
2.50
Cracking Pressure
5 Psi
Cracking Pressure (psi)
5
Brand
DANFOSS POWER SOLUTIONS II LLC (VICKERS)
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Features
Stability under pressure|Minimal maintenance|Stop leaks before they start
Leakage
Standard
Rated Flow
50
Rated Flow
50
Seal Material
Buna-N
Size
1-1/4
Special Features
None
Supplier Part Number
125667
Thread 1
1-1/4 NPT
Alternate Part Numbers
Alternate Part Number C1AJ58, Alternate Part Number DT8P110511, Alternate Part Number MINO-00900H14605
Product Weight
5.00 lbs

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Product Questions & Answers (1)

Question by: Glen F on Dec 15, 2025, 2:29 PM
got a line running 40 GPM continuous and need a check valve with 1-1/4 NPT threads -- will this one hold up to that kind of flow without issues?
Answer by: Customer Support on Dec 17, 2025, 6:59 AM
At 40 GPM you're well within the rated flow capacity here, which tops out at 50 GPM. The steel body construction and 3000 PSI max operating pressure give it plenty of headroom for that kind of continuous hydraulic service. Just keep in mind this valve is built for low shock conditions, so if your system sees high-velocity reverse flow that could generate shock, you'd want a different solution. For steady, controlled flow in that range it should perform reliably.