What is a WRAS Approval ?

Any water fitting, which when installed, will carry or receive water from the public mains water supply in the UK, must comply with the Water Supply (Water Fittings) Regulations or Scottish Byelaws.  These require that a water fitting should not cause waste, misuse, undue consumption or contamination of the water […]

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Duplex Stainless Steels – A Simplified Guide

Duplex stainless steels are becoming more common. They are being offered by all the major stainless steel mills for a number of reasons: Higher strength leading to weight saving Greater corrosion resistance particularly stress corrosion cracking Better price stability Lower price There is a conference on the subject of duplex […]

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Stellite

TABLE OF CONTENTS Stellite Identification Stellite Composition Stellite Chemical Formula Types of Stellite Stellite Properties Stellite Uses Stellite MSDS Harmful effects of Stellite Usage in Nuclear power plants Stellite alloys are a group or a range of cobalt-chromium alloys. They are designed to be resistant to wear and corrosion. These […]

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Choke Valve Recommendation

Index 1.0 Valve Design 2.0 Body Design 3.0 Trim Design 4.0 Valve Actuation 5.0 Choke Valve Data Sheet   1.0 Valve Design Design methodology, qualification and performance verification for production chokes is covered by the API specification 6A (ISO 10423) for surface equipment and API 17D for subsea equipment. These […]

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Straight pattern globe valves

The globe valves, unlike the gate valves, allow the fluid to be regulated or controlled at the same time that they isolate the line. They have a movable disk-type element and a stationary ring seat in a spherical body. Their  spherical body shape is divided in two halves, separated by an […]

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High Performance Butterfly Valve

Double Offset, High Performance , High Pressure, High Temperature, Zero Leakage Butterfly Valves    [A] STEM: The high-strength, one piece stem is 17-4 PH Stainless Steel. The valve stem is standardized for interchangeability of Bray actuators. [B] BLOW-OUT PROOF STEM: A retaining ring is installed between the machined stem groove […]

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