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Globe Valve BS 1873 and API 602

What is a globe valve? When shall it be used instead of gate and ball valves? In this article, we illustrate the scope of this type of valve (which is, in a word, to regulate the flow), the differences with other types of valve, the alternative designs, and specifications (BS 1873  for the cast steel… read more »

Weld Neck Flange Dimensions (Cl. 150/300/900/1500/2500)

The charts show the dimensions of weld neck flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters (with dimensional tolerances). WELDING NECK FLANGE DIMENSIONS IN INCHES WN CLASS 150 (IN INCH) Weld neck flange dimensions class 150 (ASME B16.5) in inches Flange NPS Inside Diameter Outside Diameter Bolt Circle (BC) Raised… read more »

Check Valve BS 1868, API 6D, API 602

A check valve prevents potentially damaging backflows to protect equipment like pumps and compressors. Non-return valves allow the flow of the fluid in one direction only and block reverse flows. This type of valves is available with cast and forged bodies (BS 1868, API 6D, API 602) and in several designs as swing, ball, lift, stop… read more »

Types of Ball Valves (Floating, Trunnion)

A ball valve features a spherical disc to open and close the flow of the fluid. They are the industry standard for pipeline shut-off applications, as their design guarantees very tight and leak-free sealing even after years of operation. The two key types of ball valves are the floating and the trunnion designs (side or top… read more »

Weld Neck Flange Dimensions EN 1092 (PN 6/10/16/25/40)

Dimensions and weights charts of PN 6/10/16/25/40 weld neck flanges EN 1092-1 Type 11, with weights and stud bolt requirements. WELD NECK FLANGE DIMENSIONS (EN 1092-1 TYPE 11) PN 6 PN 6 weld neck flange dimensions (EN 1092-1 type 11) with stud metric bolts and nuts requirements Sizes in millimeters WN Flange DN  Flange Neck… read more »

The 13 Types of Flanges for Piping Explained

Which are the most common types of flanges used in piping? How do they look like? The key types of flanges are the welding neck, long welding neck, slip-on, socket weld, lap joint, threaded and blind flanges. In addition to these standard flanges, some special ones exist, called Weldoflange/Nipoflange and Elboflange, swivel flange, expander/reducer flange, and… read more »

Materials for Pipe Flanges (ASTM)

The most common materials for pipe flanges (forged grades) are: ASTM A105 (carbon steel high temperature to match A53/A106/API 5L pipes), A350 Grades LF1/2/3 (carbon steel low temperature to match A333 pipes), A694 Grades F42 to F80 (high yield carbon steel to match API 5L pipe grades), ASTM A182 Grades F5 to F91 (alloy steel… read more »

Types of Butterfly Valves (API 609)

A butterfly valve is used to shut off or modulate the flow of a fluid (isolation and regulation). API 609 Centric butterfly valves (soft seated) are preferred to gate and ball valves for low-pressure and non-critical applications as they are cheaper, lighter and easier to install. Eccentric butterfly valves (double offset and triple offset valves) with… read more »

Plate Flange Dimensions EN 1092 (PN 6/10/16/25/40)

Dimensions and weights charts of PN 6/10/16/25/40 plate flanges EN 1092-1 Type 01, with weights and stud bolt requirements. PLATE FLANGE DIMENSIONS (EN 1092-1 TYPE 01) PN 6 PN 6 plate flange dimensions (EN 1092-1 type 01) with stud metric bolts and nuts requirements Sizes in millimeters Flange DN Pipe Flange Stud Bolts Flange Weight… read more »

Blind Flange Dimensions (Cl. 150/300/900/1500/2500)

The charts show the dimensions of blind flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters. BLIND FLANGE DIMENSIONS IN INCHES BLIND CLASS 150 (IN INCH) Blind flange dimensions class 150 in inches FLANGE NPS Outside Diameter Bolt Circle (BC) Raised Face (R) Raised Face (RF) Raised Face Thickness (T) Flat… read more »

Blind Flange Dimensions EN 1092 (PN 6/10/16)

Dimensions and weights charts of PN 6/10/16/25/40 blind flanges EN 1092-1 Type 05, with weights and stud bolt requirements. BLIND FLANGE DIMENSIONS (EN 1092-1 TYPE 05) PN 6 PN 6 blind flange dimensions (EN 1092-1 type 05) with stud metric bolts and nuts requirements Sizes in millimeters Flange DN Nominal Diameter Flange Stud Bolts Flange… read more »

Safety Valve and PRV (ASME/API 526)

A safety valve protects people, the environment, and other plant assets from overpressure that may cause explosions or other damaging events. A safety valve opens automatically anytime a set pressure is exceeded. Safety valves are last-resource devices that intervene when other protection devices have failed. Safety valves may be spring or pilot operated. WHAT IS… read more »

Carbon Steel Pipe A53/A106 Gr. B, A333 Gr. 6

Learn about the 3 most common specifications for carbon pipes: ASTM A53 (black and galvanized steel pipes, seamless and welded), ASTM A106 (seamless CS tubular for high pressure and high-temperature applications up to 750 degrees F), and ASTM A333 (low-temperature service). The article gives you an overview of these three specifications in terms of typical uses,… read more »

Flange Pressure Rating Explained (and Charts)

What means ANSI flange pressure rating? How to select the right flange rating? The term “flange rating” (or class) refers to the maximum pressure (in psi or bars) that a flange withstands at increasing temperatures. Flanges with a higher rating (class) are stronger than flanges with lower ratings, as they bear more pressure at increasing temperatures. Flanges made… read more »

Slip On Flange Dimensions (Cl. 150/300/900/1500/2500)

The charts show the dimensions of slip on flange class 150, 300, 400, 900, 1500, 2500 in inches and in millimeters. SLIP-ON FLANGE DIMENSIONS IN INCHES SLIP-ON CLASS 150 Slip on flange dimensions class 150 in inches (ASME B16.5) FLANGE NPS Inside Diameter Outside Diameter Bolt Circle (BC) Raised Face (R) Raised Face (RF) H… read more »

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