Naf Check Valve

Structural Feature Short structural length,only 1/4~1/8 of that of traditional flanged check valve; Low volume,light weight,only 1/4~1/20 of those of traditional flanged check valve; Quick valve disc closedown,low water hammer pressure; Applicable for and easily installed for vertical or...

Product Details

Overview

Check Valve is applicable for various pipelines with nominal pressure of PN1.0MPa~42.0 MPa,Class150~2500 and nominal diameter of DN15~1200mm,NPS1/2-48 and working temperature of -196~540℃ to be used for protecting from medium back flowing. The different materials selection can apply to the medium involving water, steam, oils, nitric acid, strong oxidizing medium and urea etc.


Product Range


Nominal diameter: 2" ~ 24" (DN50 ~ DN600)

Pressure range: Class 150 ~ 2500 (PN16 ~ PN150)

Working temperature:-196℃ ~ +560℃

Body material: carbon steel, stainless steel, alloy steel, bronze, etc


Specifications

Applied widely;

Small volume and light weight;

Rapid closing and flexible actions of the valve clack;

Smooth fluid passageway and small fluid resistance;

Small closing impact, water hammer is not liable to be generated;

Compact and reasonable product structure, reliable tightness and good performance.

Applicable Standards


Inspection and test: API598, JB/T9092;

Design and manufacture: API594, API 6D, JB/TB8937;
Face to face and end to end: API594, API6D, DIN3202, JB/T8937;
Pressure-temperature rating: ASME B16.34, DIN2410, GB/T9124, HG20625, SH3406, JB/T74;
Pipe flange: JB/T74~90, JB/T9112
~9124, HG20592~20635, SH3406, ASME B16.5, DIN2543~2548, API605, ASME B16.47.

Material For Choice

Carbon steel

A216 Gr. WCB, WCC, WCA , etc

Low temperature steel

A352 Gr. LCB, LCC, LC1, etc

Cr-Mo steel

A217 Gr. WC6, WC9, C5, C12, C12A, etc

Stainless Steel

A351 Gr. CF8, CF8M, CF3 , CF3M, CF8C, etc

Alloy steel

CN7M alloy 20, CN3M alloy 20 modified, CT15C, etc

Super duplex

A995 Gr. 4A, 5A , CE8MN, CD6MN, CD3MN, etc

Aluminum bronze

B148 C95500, C95600, C95800, etc

Monel

M30C, M35-1, CZ100, etc

Inconel

CY40 inconel 600, etc

Hastelloy

CW2m Hastelly C4, N12MV Hastelloy B, CW12MW Hastelloy C276, etc

Incoloy

CU5MCuC Incoloy 825, CW6MC Incoloy 625, etc

Inquiry