Pig Launcher & Receiver Sizing Calculator

Carrier Pipe Size (NPS)

Estimated Longest Pig Length

Leave blank to use standard approximation.

MAOP (optional)

psig

Sizes the quick-opening closure / flange class (ASME B16.5 rating; QOC safety locking device per ASME B31.8 §831.371 / BPVC VIII UG-35(b)).

Review detailed design criteria for pig traps, including closure safety, vent/drain sizing, and material selection requirements.

Barrel Sizing: Based on standard practice of oversized barrels (typically +2" to +6" over carrier pipe) to facilitate pig loading/unloading.
Lengths: Launcher barrel length is typically 1.5x pig length + 2ft. Receiver barrel is 2.0x pig length to accommodate debris.
Valves: Kicker and bypass valves should be sized to prevent excessive pressure drop or velocity.
Code: Designs must comply with ASME B31.8 / 49 CFR 192. Fabricated assemblies in stations usually require 0.50 design factor.

Frequently Asked Questions

What does a pig launcher and receiver sizing calculator determine?

It calculates standard pig launcher and receiver dimensions, barrel sizing, and valve requirements based on pipeline size per industry standards.

What is a pig launcher used for in pipelines?

A pig launcher is used to insert pipeline inspection or cleaning tools (pigs) into a pipeline without interrupting flow.

How is pig launcher barrel size determined?

Barrel sizing is based on the pipeline diameter and the type of pig being launched, following established industry design guidelines.