Nozzle Check Valves

Solid Disc

Type ZB & ZD

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ZB
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The axial design allows for a streamlined flow path around the disc and high pressure recovery, minimising pressure drop across the valve. This efficient design combined with the highly responsive nonslam operation make this valve ideal for high head, critical pump applications.

Type ZB – The ZB is the standard valve for sizes 1” – 10”. Its optimum designed aerodynamic flow path through the valve results in very low pressure losses. It is also available with API 6D face-to-face dimensions (ZD).

Materials according to customers request, such as Low Temperature Carbon Steel, Nickel-Aluminium-Bronze, Duplex, Superduplex, 6Mo, etc. are our speciality!

Features:

Denomination Ductile Iron Carbon Steel Stainless Steel
Valve Body ASTM A 395 ASTM A 216 WCB / A 105 N ASTM A 351 CF8M / AISI 316
Seat AISI 316 AISI 316 ASTM A 351 CF8M / AISI 316
Valve Disc ASTM A 351 CF8M / AISI 316 ASTM A 351 CF8M / AISI 316 ASTM A 351 CF8M / AISI 316
Spring AISI 316 AISI 316 AISI 316
Circlip Inconel 625 Inconel 625 Inconel 625
Flow Diffuser ASTM A 351 CF8M ASTM A 351 CF8M ASTM A 351 CF8M
Max Submergence Depth 28m 28m 28m