SUN HYDRAULICS
SCCBLDV

***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 SCCBLDV (SCCBLDV) is an atmospherically referenced, direct-acting sequence valve with a reverse-flow check, designed to supply a secondary circuit with flow once the inlet pressure at port 1 exceeds the valve setting. It features an integral check valve that permits reverse flow from port 2 back to port 1. This sequence valve controls the pressure at port 1 relative to atmospheric pressure and is particularly suitable for load holding applications. Atmospherically referenced valves like this one should only be used in scenarios where it is not feasible to have a drain connection, as they may leak externally or allow moisture into the spring chamber over time. The valve incorporates Sun's floating style construction, minimizing internal part binding due to excessive installation torque or machining variations. The SCCBLDV has a cavity size of T-13A, Series 1, with a capacity of 15 gpm (60 L/min). Factory pressure settings are established at 2 in/min (30 cc/min), and it can handle a maximum operating pressure of up to 5000 psi (350 bar). The typical response time for this valve is around 2 ms, and the maximum leakage at reseat is about 10 drops/min (0.7 cc/min). It features a check cracking pressure of 40 psi (2.8 bar) and requires approximately five clockwise turns to increase its setting. The valve hex size is 7/8 in. (22.2 mm), and installation torque ranges between 30 - 35 lbf ft (41 - 47 Nm). The adjustment screw's internal hex size is 5/32 in. (4 mm), while the locknut hex size measures at 9/16 in. (15 mm) with a locknut torque between 80 - 90 lbf in. (9 -10 Nm). The model weighs approximately .30 lb (.15 kg) and uses Viton seals for its cartridge seal kit.