SUN HYDRAULICS
RSFCODV

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics RSFCODV (RSFCODV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure surpasses the valve setting. This valve efficiently controls the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to its set threshold. It is particularly useful for regulating pressure in scenarios where there is return line pressure, offering an alternative to two-port relief valves. The RSFCODV model features physical and functional interchangeability among all three-port sequence cartridges of similar frame sizes, sharing the same flow path and cavity configuration. This sequence valve incorporates a main stage orifice protected by a 150-micron stainless steel screen and is capable of handling pressures at port 3 that are directly additive to the valve setting at a 1:1 ratio, with a maximum limit of 5000 psi (350 bar). However, it is not recommended for load-holding applications due to spool leakage. The RSFCODV can be adjusted through W or Y controls across its full range unless a specific setting is designated as its maximum. The cartridge uses EPDM seals suitable for systems utilizing phosphate ester fluids but may suffer damage if exposed to petroleum-based substances. It employs Sun's floating style construction that reduces internal part binding risks due to excessive installation torque or machining variations. The technical specifications include a series T-2A cavity, a capacity of 30 gpm (120 L/min), and factory pressure settings established at 4 gpm (15 L/min). The maximum operating pressure reaches up to 5000 psi (350 bar), with control pilot flow ranging from 10-15 in\u00b3/min (0.16-0.25 L/min). It boasts typical response times of around 10 ms and allows for adjustment via clockwise turns on the screw, requiring specific torque settings for installation and locknut adjustments.