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SPX RELIEF VALVE 10 100/10 700 PSI

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Description & Features

Designed for precision and reliability, the SPX Relief Valve offers an effective solution for safeguarding hydraulic systems against over-pressurization. With an adjustable pressure range from 300 to 10,000 PSI, this valve ensures consistent performance, maintaining a given pressure setting within a 3% variance over repeated cycles. The valve features a 1/8 NPTF male inlet and supports a maximum flow rate of 5 GPM, making it ideal for both single- and double-acting cylinder applications.

Manufactured by SPX Hydraulic Technologies, this relief valve is factory pre-set and delivers robust protection for your hydraulic circuits. Its compact design allows for seamless integration into existing systems, enhancing operational efficiency without compromising on safety.

SKU: RV21278

Supplier Part Number (MPN): RV21278

Alternate Part Numbers: C1JQ77

Specifications

Connection Type
FNPT
Pressure Rating
10100 psi, 10700 psi
Series
21278 Series

Product Questions & Answers (2)

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Question by: Sherry A on Jan 7, 2026, 12:59 PM
pressure range on this thing goes up to 10,000 PSI -- that's what I'm seeing anyway. but does it come already set from the factory or do I have to dial it in myself when it arrives?
Answer by: Customer Support on Jan 8, 2026, 1:03 PM
Factory pre-set is how it ships, so you won't be starting from scratch. That said, it's fully adjustable anywhere between 300 and 10,000 PSI, so if your system runs at a different operating point you can tune it to where you need it. Once you land on a setting, it holds within 3% across repeated cycles, which keeps things consistent without a lot of babysitting.
Question by: Wade C on Sep 4, 2025, 12:01 PM
need a relief valve for a 10,000 psi setup. what pressure range can this one actually be adjusted to
Answer by: Customer Support on Sep 6, 2025, 7:06 AM
For setting pressure, it adjusts from 300 to 10,000 PSI and it will hold that setting within about 3 percent over repeated cycles.

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