BS Standard MECH BMI FLANGE 321H | MODEL 321H

Model 321H

Standard: BS EN 10242 / ISO 49
Material: Malleable cast iron BS EN 1562
Threads: ISO 7-1 (BSPT)
Rated pressure (UL): 500 psig
Approvals: UL (EX6624) / FM
Equivalent model: GF25
Sizes: 1/2" – 4"

Certificates & approvals

FM Approvals FM — MECH Pipe Fittings (threaded & grooved) Verify ↗
UL UL — BS Standard MECH BMI FLANGE 321H | MODEL 321H EX6624 Verify ↗
UL UL — BS Standard MECH BMI FLANGE 321H | MODEL GF25 (related to model 321H) EX6624 Verify ↗
EPD EPD — MECH Malleable iron fittings
NSF NSF/ANSI 372 — MECH fittings & valves, lead free (IAPMO R&T) 6047
NSF NSF/ANSI 61 — MECH fittings & valves (IAPMO R&T) N-5941

Build a submittal PDF for this product Certificates centre

SIZES & DIMENSIONS

Sizes & dimensions

Size	DN	A (mm)
1/2"	DN15	15
3/4"	DN20	16
1"	DN25	19
1-1/4"	DN32	21
1-1/2"	DN40	21
2"	DN50	26
2-1/2"	DN65	30
3"	DN80	33
4"	DN100	39

PROJECT APPROVALS

Approved on projects

96 projects and 64 owners approved this product or its family through the project consultants.

All projects

SASREF – supplier registration SASREF (Saudi Aramco) · 2026 Approved Second Masar – prequalification (AAN) Umm Al Qura for Development & Construction (Masar) · 2026 Approved Residence Inn project Residence Inn · Elie & Randa Gebrayel Architects (ERGA) · 2026 Approved King Salman Park King Salman Park Foundation · Saudi Arabian Parsons Ltd. · 2026 Approved Civil Defence requirements implementation – AgriServ National Company for Agricultural Services (AgriServ) · Assuring Codes & Keen Design (ACKD) · 2026 Approved King Abdullah Financial District Project Parsons · 2026 Approved Replacing old generators at domestic airports – prequalification General Authority of Civil Aviation · 2025 Approved Lumi Logistic Park – Tabuk Lumi · Memarion Tabuk Engineering Consultancy · 2025 Approved as supplier Masar Destination – firefighting valves & accessories Umm Al Qura for Development & Construction (Masar) · KEO International Consultants · 2025 Approved Public buildings – National Guard Housing, Taif Ministry of National Guard · Dar Al Riyadh · 2025 Approved as noted New Murabba – Prototype Building (2007) New Murabba Development Company · KEO International Consultants (PMC: AECOM) · 2025 Approved with comments Buraiq Al-Awali project ASG · HEC · 2025 Approved

and 84 more projects.

Original approval letters are provided on request with your submittal.

About this product

MECH 321H black malleable iron flange 321h, BS EN 10242, ISO 7-1 (BSPT) threads, 1/2″ – 4″, UL listed and FM approved. Exclusive MECH agent in Saudi Arabia.

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