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C-175 Series Panel Mount Direct-Acting Relief Valve, 1500-3000 PSI Adjustment Range

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Description & Features

The C-175 Series Panel Mount Direct-Acting Relief Valve offers a robust solution for pressures ranging from 1500 to 3000 PSI. Its cast iron body and Buna-N seals ensure durability and reliability across various industrial applications such as die casting machine tools and turbine control. The valve is defined by its plug-and-play design moisture resistance and high-performance features.

Equipped with a knob adjustment style and jam nut for precise control it supports a maximum flow rate of 3 GPM. The valve uses 1/4 NPT inlet and outlet ports and is typically utilized to remotely control a ventable relief valve. Achieving optimal fluid cleanliness at 19/17/14 micron levels this panel mount valve is a dependable component for demanding environments.

MPN: C-175-F-20

Supplier Part Number: 631056

Specifications

Adjustable Range
1500-3000
Adjustment
1
Application
Die casting & foundry, Machine tool, Marine/Offshore, Press, Primary metal, paper, Test equipment & simulation, Turbine control (wind, steam, water)
Body Material
Cast Iron
Check Valve
No
Design Code
20
Diode
No
Brand
DANFOSS POWER SOLUTIONS II LLC (VICKERS)
Brand
Danfoss Power Solutions
Pack Size
1.00
UOM
EA
Electrical Flag
No
Features
Plug-and-play design|High-performance features|Moisture resistant
Fluid Cleanliness
19/17/14 micron
Hi Vent Spring
No
Inlet Port
1/4 NPT
Interface
1 3/4 In.
Leakage
Standard
Manual Override
No
Outlet Port
1/4 NPT
Performance
Standard
Remote Control
1
Seal Material
Buna-N
Supplier Part Number
631056
Switch Connector
No
Valve Mount Type
Panel Mount
Alternate Part Numbers
Alternate Part Number C175F20, Alternate Part Number C1BW85
Product Weight
3.30 lbs

Related Documents

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Model Number Part Number Adjustable Range Inlet Port Outlet Port Seal Material Price Action
C-175 Series Panel Mount Direct-Acting Relief Valve, 1500-3000 PSI Adjustment Range

C-175-F-20 C-175 Series Panel Relief Valve

631056

1500-3000

1/4 NPT

1/4 NPT

Buna-N

Product Questions & Answers (2)

Question by: Bobby G on Nov 24, 2025, 9:15 PM
what's the pressure range on this valve and is 3000 PSI actually the top end or just a typical rating?
Answer by: Customer Support on Nov 26, 2025, 9:18 AM
The adjustment range runs from 1500 to 3000 PSI, and yes, 3000 PSI is the stated maximum operating pressure for this valve. So if your system runs anywhere in that window, you've got room to dial it in precisely using the knob and jam nut adjustment. Anything beyond 3000 PSI would be outside what this valve is rated for.
Question by: Sheila B on Jan 18, 2026, 1:33 PM
Will this relief valve work okay in a hydraulic press application?
Answer by: Customer Support on Jan 20, 2026, 12:29 PM
Absolutely, this valve is well-suited for hydraulic press applications, along with die casting, machine tools, and other demanding industrial uses.