Flowserve IG 253, IG 503, IG 701 Assembly Instructions

Step‑by‑step assembly instructions, torque tables, lubricants and parts list for Flowserve IG 253/503/701 actuators.

Brand: Flowserve
Category: Industrial Supply
Document type: Installation Guide
Language: English
Pages: 44
File format: PDF
File size: 13.4 MB
Published: 07 October, 2026
Updated: 07 October, 2026
MD5 checksum: 8042E942EB414DF76833B13BC83C40F6
PDF: Flowserve IG 253, IG 503, IG 701 Assembly Instructions PDF

About this manual

This document provides detailed assembly procedures for Flowserve FlowAct IG actuators (models IG 253, IG 503 and IG 701). It covers both spring‑to‑close and spring‑to‑open configurations, with and without hand wheels, and includes safety warnings and required personal protective equipment.

Technical tables give torque requirements, recommended lubricants, spring orientation, and a list of special tools and spare parts needed for proper installation and maintenance.

What's inside

General
Assembling Instructions – Spring to Close
Assembling Instructions – Spring to Open
Technical Tables – Torque Requirements
Technical Tables – Lubricants
Technical Tables – Spring Orientation
Technical Tables – Spring Packages
Technical Tables – Special Tools
Parts List

Specifications

Actuator force	IG 253: 500 N (112 lb), IG 503: 1 000 N (225 lb), IG 701: 1 400 N (315 lb)
Spring range	IG 253: 0.2–1.0 mm, IG 503/701: 2.9–14.5 mm
Color	White, powder coated
Lock nut torque (metric)	3.5 lb hammer (1.5 kg) for IG 253/503/701

Frequently asked questions

What safety precautions are required when assembling a FlowAct IG actuator?

Keep hands, hair and clothing away from moving parts, wear protective clothing, gloves and eye protection, and follow the warning to avoid serious injury.

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