Modular check valve NS 6 - Sandwich plate design for use in vertical stacking assemblies - Poppet design - Leakfree closure in one or two service ports - 8 different models - Installation dimensions to ISO 4401/ DN 24 340 Functional Description The check valve sandwich plates are used to allow flow in one direction and prevent flow in the other one. The sandwich design enables vertical stacking with other components of the same size. The check elements can be built into one or two ports, the other ports being Through-holes. The seat (3) is machined directly in the housing (1) and the poppet (2) is pushed onto the seat by compression spring (4). The cracking pressure depends on the spring used, on its preload and on the pressurized poppet surface area. The valve housing surface is phosphate coated.

Modular check valve Nominal size 6 Check valve P Check valve in line P A Check valve in line A B Check valve in line B T Check valve in line T AB Check valve in line A+B PT Check valve in line P+T A1 Check valve in line A B1 Check valve in line B Cracking pressure : without specification = 0,5 bar (standard) 015 = 1,5 bar 030 = 3,0 bar 050 = 5,0 bar Functional symbols Notes: The orientation of the symbol on the name plate corresponds with the valve function. A2 P2 T2 B2 ® valve side @ subplate or manifold side Technical Data Valve size mm (US)

Ap-Q Characteristics Measured at v - 32 mrrr/s (156 SUSj Pressure drop Ap related to flow rate. hlowQ [L/min (GPM)j Dimensions in milimeters unchesi Dimensions in millimeters (inches) Name plate Seal kit, supplied with valve Required surface finish

HYDROPA HYDRAULISCHE ERZEUGNISSE GMBH & CIE. KG Darmannsbusch 4 • D-58456 Witten / Postfach (PO. Box) 3165 • D-58422 Witten Telefon (Phone): +49 2302 7012-0 • Telefax: +49 2302 7012-47 E-Mail: [email protected] • Internet: www.hydropa.de Spare Parts Dimensions in millimeters (inches) Caution! • The packing foil is recyclable. • The protective plate can be returned to manufacturer. • Mounting bolts M5 must be ordered separately. Tightening torque of the bolts is 8.9 Nm. • The technical information regarding the product presented in this catalogue is for descriptive purposes only. It should not...