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valve packing

4 in-depth engineering guides on valve packing — specification, selection, testing and procurement.

Everything on valve packing

Vajra's engineering team has published 4 technical guides covering valve packing for industrial valve selection, specification, testing and procurement. Browse the full set below.

How to Replace Gate Valve Packing: Step-by-Step Maintenance Guide

Replacing gate valve packing is one of the most common field maintenance tasks - and one of the most frequently done incorrectly. A methodical approach prevents leaks, stem damage, and unsafe conditions.

2026-05-199

Valve Packing Types and Fugitive Emissions - PTFE, Graphite, Bellows Seal

Fugitive emissions through valve stem packing are a major concern for environmental compliance, workplace safety, and process integrity. Modern packing designs - from standard PTFE chevron to live-loaded graphite and zero-leakage bellows seal - each have specific application ranges. This guide explains the options and when each is required.

2026-05-049

Fugitive Emissions from Industrial Valves: ISO 15848, API 641, and Low-E Stem Sealing

Valve stem and shaft seals are the leading source of process plant fugitive emissions of VOCs, methane, and toxic gases. ISO 15848, API 641, and EPA LDAR regulations define the test methods and acceptance criteria for low-emission (Low-E) valves now mandated across the oil, gas, and chemical industries.

2026-04-1010

Valve Packing and Gland Maintenance: A Practical Engineering Guide

Valve packing is the primary stem seal that prevents process fluid from leaking to atmosphere along the valve stem. Selecting the right packing material, correctly loading the gland, and re-packing without taking the valve out of service are critical maintenance skills for safe and environmentally compliant plant operations. This guide covers packing types, fugitive emission standards, and step-by-step maintenance procedures.

2026-03-2810