SUN HYDRAULICS
RSHCYBV

***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 RSHCYBV (RSHCYBV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the valve setting. This valve's pressure setting controls the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It can regulate pressure in place of two-port relief valves if there is return line pressure. All three-port sequence cartridges are interchangeable in terms of flow path and cavity for a given frame size. Pilot flow increases as inlet pressure at port 1 rises above the valve setting relative to drain pressure at port 3. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the maximum operating pressure should not exceed 5000 psi (350 bar). However, this model is not suitable for load-holding applications due to spool leakage. The RSHCYBV features Sun's floating style construction, minimizing internal part binding due to excessive installation torque or machining variations. It has a cavity size of T-17A and series capacity of up to 60 gpm (240 L/min), with factory settings established at 4 gpm (15 L/min). The control pilot flow ranges from 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times around 10 ms and maximum leakage rates of 4 in\u00b3/min (1000 psi/65 cc/min/70 bar) at optimal fluid viscosity. The valve's hex size is 1\u00bc inches (31.8 mm), and its installation torque ranges from 150-160 lbf\u00b7ft (203-217 Nm). Adjustment requires an internal hex screw size of ^5/32 inches (4 mm) and locknut torque between 80-90 lbf\u00b7in (9-10 Nm). The model weighs approximately 1.50 lb (0.70 kg) and includes a Viton seal kit option under part number 990017006 for enhanced durability and performance in various applications.