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SWING CHECK VALVES

Product catalog summary

Air Valve Capacity and Sizing:
Air valve sizing is crucial and depends on the pressure difference at which the valve operates. Key criteria include designing for vacuum and discharge. For vacuum, the valve must allow air to replace the downgoing column to prevent collapse, with a Delta-P not exceeding 0.2 bar. For discharge, a Delta-P of 0.1-0.15 bar is recommended, but high air velocity can cause 'wet-closing' and induce surge, leading to pipe bursts. Effective discharge velocity should be limited to 30-35 m/s to avoid surge.

Specifications of Swing Check Valves (Series ES-51):
- Nominal Diameter: DN50 to DN1000mm
- Nominal Pressure: PN10/16/25/40
- Working Temperature: -10℃ to 120℃
- Seat Test: 1.1×PN
- Shell Test: 1.5×PN
- Features include robust design, easy maintenance, optional sealing materials, anticorrosion coating, and optional hydraulic damper.

Construction Materials:
The valves are constructed using materials like EN-GJS-400-15 for the body and flap, EPDM for O-rings, and X20Cr13 for the shaft.

Optional Features:
Includes hydraulic dampers and protection baskets for enhanced performance.

Company Information:
RAPHAEL Valves Industries, established in 1949, is a leading Israeli manufacturer of water control valves, offering innovative solutions for various systems including waterworks, fire protection, and irrigation.

Catalog excerpts

C RAPHAEI Product Brochure SWING CHECK VALVES Series ES-51

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General Description - High quality robust design with full bore and minimum pressure drops. - Top cover design allows easy maintenance and cleaning without dismantling from the pipe line. - Optional sealing materials include soft, bronze and stainless steel sealing alternatives - High Quality anticorrosion coating. - Optional counterweight for fast closing with possibility for limit switch installation. - Installation in either horizontal or vertical position. - Optional hydraulic damper for soft and silent closing. 2 - Swing Check Valves

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* other nominal sizes on request Swing Check Valves - 3

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2 - Swing Check Valves

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Construction Materials Optional Features &RAPHAEL Swing Check Valves - 5

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Optional Features - Hydraulic Damper DN Q_ < cr 6 - Swing Check Valves

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Optional Features - Protection Basket 4RAPHAEL Swing Check Valves - 7

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SMART SOLUTIONS Raphael valves industries (1975) ltd, founded in 1949, is the first Israeli manufacturer of water control valves. RAPHAEL'S research department constantly strives to introduce new and innovative products and solutions for water control systems including water works, fire-protection and irrigation systems and other fields. North Industrial Zone Or Akiva, 3065401 POBox 555, Israel Phone: +97246263555 E-mail: [email protected] Website: www.raphael-valves.com

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SWING CHECK VALVES

SWING CHECK VALVES

Catalog excerpts

All Raphael Valves Industries (1975) Ltd catalogs and technical brochures