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MSS SP-154 PDF Preview
MSS SP-154-2023

Low Pressure Knife Gate Valves for Double Block and Bleed

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MSS SP-155 PDF Preview
MSS SP-155-2018

Plastic-Lined Metal Valves

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MSS SP-156 PDF Preview
MSS SP-156-2019

Ductile Iron, Metal-Seated, Non-Lubricated, Eccentric Plug Valves

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MSS SP-157 PDF Preview
MSS SP-157-2024

Quality Standard for Phosphate Surface Protective Coatings for Valves, Fittings, and Related Steel Piping Components

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MSS SP-158 PDF Preview
MSS SP-158-2021

Supplemental High-Pressure Gas Test Procedures for Valves

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MSS SP-159 PDF Preview
MSS SP-159-2024

Manual Actuators for Hand-Operation or Automated Input

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MSS SP-161 PDF Preview
MSS SP-161-2024

A Guidelines for Classifying the Severity of Valve Service Conditions

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MSS SP-162 PDF Preview
MSS SP-162-2025

Design Requirements for Actuator-to-Valve Mounting Components

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MSS SP-163 PDF Preview
MSS SP-163-2025

Cable Suspension of Pipe ̶ Materials, Selection, Application, and Installation

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MSS SP-164 PDF Preview
MSS SP-164-2025

Protection of Valves, Fittings, and Actuators from Damage during Surface Preparation and Application of Coatings

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MSS SP-165 PDF Preview
MSS SP-165-2025

Large Diameter Slip-On and Lap-Joint Flanges

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MSS SP-25 PDF Preview
MSS SP-25-2018

Standard Marking System for Valves, Fittings, Flanges, and Unions

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MSS SP-42 PDF Preview
MSS SP-42-2013

Corrosion-Resistant Gate, Globe, Angle, and Check Valves with Flanged and Butt Weld Ends (Classes 150, 300, & 600)

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MSS SP-43 PDF Preview
MSS SP-43-2026

Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications

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MSS SP-44 PDF Preview
MSS SP-44-2026

Steel Pipeline Flanges

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MSS SP-45 PDF Preview
MSS SP-45-2020

Bypass and Drain Connections

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MSS SP-51 PDF Preview
MSS SP-51-2021

Class 150LW Corrosion Resistant Flanges and Cast Flanged Fittings

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MSS SP-53 PDF Preview
MSS SP-53-2021

Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components –Magnetic Particle Examination Method

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MSS SP-54 PDF Preview
MSS SP-54-2025

Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components–Radiographic Examination Method

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MSS SP-6 PDF Preview
MSS SP-6-2021

Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings

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MSS SP-60 PDF Preview
MSS SP-60-2021

Connecting Flange Joints between Tapping Sleeves and Tapping Valves

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MSS SP-61 PDF Preview
MSS SP-61-2019

Pressure Testing of Valves

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MSS SP-65 PDF Preview
MSS SP-65-2024

High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens Gaskets

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MSS SP-67 PDF Preview
MSS SP-67-2022

Butterfly Valves

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MSS SP-68 PDF Preview
MSS SP-68-2021

High Pressure Butterfly Valves with Offset Design

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