SUN HYDRAULICS
NCECHAV

***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 NCECHAV (NCECHAV) is a versatile needle valve with a reverse flow check, designed to provide precise flow regulation through an adjustable orifice. This component allows infinite adjustability from fully closed to the maximum orifice diameter, making it suitable for applications requiring variable flow control. It features an integral high-capacity check valve that ensures unrestricted flow from port 2 to port 1. The valve is not pressure compensated, meaning the fixed orifice size regulates flow based on the square root of the pressure differential between ports 1 and 2. This model incorporates Sun's floating style construction, which helps prevent internal parts from binding due to excessive installation torque or machining variations in the cavity and cartridge. The NCECHAV model is designed for easy adjustment even under high-pressure conditions, thanks to its balanced adjustment mechanism. It also includes a sharp-edged orifice design that minimizes flow variations caused by changes in fluid viscosity. The valve has a capacity of 3 gpm (11 L/min) and can operate at pressures up to 5000 psi (350 bar). It exhibits minimal leakage at 110 SUS (24 cSt), with a maximum of 5 drops per minute (0.3 cc/min). The valve requires specific installation and adjustment torques: 45-50 lbf ft (61-68 Nm) for installation and 80-90 lbf in (9-10 Nm) for the locknut. Physically and functionally interchangeable with other two-port flow control cartridges of the same frame size, this needle valve offers consistent performance across different setups while maintaining compatibility with existing systems. Its compact design includes a valve hex size of 1-1/8 inches (28.6 mm), an internal hex size of 5/32 inches (4 mm) for adjustment screws, and a locknut hex size of 9/16 inches (15 mm). The model weighs approximately .40 lb (.20 kg).