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NDV

NDV

Product catalog summary

Specifications:
The document provides detailed specifications for NDV flow control valves, available in sizes DN6 to DN40 (1/8" to 2"). These valves are suitable for piping-system assembly and are made from steel or stainless steel. They feature female threads compliant with DIN ISO 228, ANSI B1.20.1 NPT, and SAE J 514 ISO/DIS 11926-1 standards. The valves operate within a temperature range of -20°C to 100°C, with some models capable of -30°C minimum temperature.

Materials:
The body of the valves is available in steel or stainless steel, with O-rings made from NBR or FPM. The material codes are 1A, 18, 4A, and 48.

Dimensions and Weight:
The document lists dimensions and weights for various valve types, such as NDV-DN6-G1/8 weighing 0.12 kg and NDV-DN40-G2 weighing 6.24 kg. The pressure rating for all models is 350 bar.

Flow Characteristics:
Flow values are provided for hydraulic oil with a density of 880 kg/m3 and a kinematic viscosity of 35 mm2/s. The document includes flow characteristics for different valve sizes, indicating the relationship between pressure drop (∆p) and flow rate (Q) in liters per minute.

Recommendations:
It is noted that flow control valves should not be used as shut-off devices due to potential small leakage rates in the fully closed position, as per DIN EN 12266 standards.

Additional Information:
Accessories such as panel mounting kits are available upon request. The document also includes order codes for material combinations and notes that certain articles are usually in stock.

Catalog excerpts

Flow control valve for piping-system assembly Steel / Stainless Steel AVAILABLE SIZES PORTING PATTERN DIN ISO 228 Female thread, ANSI B1.20.1 NPT Female thread, SAE J 514 ISO/DIS 11926-1 Female thread ACCESSORIES ON REQUEST • Panel mounting kit MATERIAL CODE DESCRIPTION Materials Flow control Stainless Steel Stainless Steel Tmin / Tmax GENERAL DIMENSIONS Type

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Flow control valve for piping-system assembly Steel / Stainless Steel NDV ORDER CODE PER MATERIAL COMBINATION CONNECTION TYPE Please note the pressure ratings of the tube connections! Flow control ANSI B1.20.1 NPT FEMALE THREAD *Article usually in stock. Flow control valves should not be used as shut-off device. Small leakage rates may occur in fully closed position. (DIN EN 12266 – leakage rate A-B – test

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Flow characteristics NDV, NDRV, NDVP, NDRVP The flow values are valid for hydraulic oil (spissitude 880 kg/m3) and the kinematic viscosity v of 35 mm2/s. NDV/NDRV/NDVP/NDRVP-DN8 handle turns - the higher the number, the wider open the valve handle turns - the higher the number, the wider open the valve handle turns - the higher the number, the wider open the valve Flow control handle turns - the higher the number, the wider open the valve

Open the catalog to page 3

Flow characteristics NDV, NDRV, NDVP, NDRVP The flow values are valid for hydraulic oil (spissitude 880 kg/m3) and the kinematic viscosity v of 35 mm2/s. NDV/NDRV/NDVP/NDRVP-DN20/25/30/40 handle turns - the higher the number, the wider open the valve handle turns - the higher the number, the wider open the valve Flow control Flow direction: B-A ∆p characteristic line free flow through check valve

Open the catalog to page 4

NDV

NDV

Catalog excerpts

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