Overview
Valves and pumps present unique flange challenges: the flange is integral to the equipment casting or forging, space is often constrained, and the bore must match precisely to avoid flow turbulence and cavitation. Standard ASME B16.5 flanges don't always fit — compact designs, custom bores, and adaptor flanges are frequently required.
JIAJI FORGING produces custom flanges for valve manufacturers, pump OEMs, and end users replacing worn equipment connections. This cluster covers the specialized world of equipment connection flanges:
NORSOK L-005, SPO Compact, Vector — reduced bolt circle, thinner cross-section, weight savings up to 70% vs standard flanges.
API 610, ANSI/HI, ISO 2858 — suction flange is always one size larger than discharge. Drilling patterns are often non-standard.
Valve seat bores and pump impeller bores don't match NPS nominal diameters. Custom bored and tapered bore flanges solve the mismatch.
Connecting ASME flanges to EN, API, or JIS equipment. Adapter spools, reducing flanges, and custom transition pieces.
Articles in This Cluster
Compact Flanges for Valve & Pump Applications
Reduced-weight, reduced-space flange designs for valve bodies and pump casings. NORSOK L-005 compact flanges, SPO Compact, and VCF designs.
Read Full Guide →Pump Suction & Discharge Flange Standards Guide
ANSI/HI, API 610, and ISO 2858 pump flange standards. Suction vs discharge sizing, drilling patterns, and common piping interface issues.
Read Full Guide →NPS vs Custom Bore: Matching Flanges to Valves & Pumps
Why standard NPS bores don't always match valve/pump bores. Custom bore flanges, tapered bore transitions, and flow turbulence considerations.
Read Full Guide →Flange Adaptors & Transition Pieces for Equipment Connections
Adapter flanges, reducing flanges, and custom transition spools for connecting equipment with mismatched flange standards. ASME-to-EN and ASME-to-API solutions.
Read Full Guide →Need Expert Guidance on Valve & Pump Flanges?
JIAJI FORGING's engineering team brings 15+ years of experience in forged flange design, material selection, and international standards compliance.