API 602 Forged Valves · A105N · Class 800–2500 · NPS ½–4 · Saudi Arabia · SAEP-347

API 602 Forged Steel Valves Saudi Arabia — Small-Bore Gate, Globe & Check Valves

ASTM A105N · Class 800 · 1500 · 2500 · NPS ½–4 · SW · Threaded · BW · SAEP-347 · EN 10204 3.1

Gulf Union Ozone stocks API 602 compact forged steel valves in Jeddah for Saudi Aramco instrument root valves, block valves, and small-bore process piping applications. Forged construction — formed from dense, solid steel billet rather than cast from molten metal — gives API 602 valves superior mechanical strength and porosity-free bodies, making them the standard for NPS ½ to 4 high-pressure small-bore applications in oil and gas facilities. All valves are supplied with ASTM A105N normalized certificates and EN 10204 3.1 Mill Test Certificates as part of the standard documentation package.

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API 602 forged steel valves Saudi Arabia A105N small bore Class 800 1500 2500 SAEP-347 — Gulf Union Ozone Jeddah
StandardAPI 602
MaterialA105N · A182 F316
Pressure ClassClass 800 · 1500 · 2500
Size RangeNPS ½ – 4
EndsSW · Threaded · BW
SAEP-347Annex 4 Compatible
API 602 Explained

API 602 vs API 600 — Forged vs Cast, Small-Bore vs Large-Bore

API 600 covers full-bodied cast steel gate valves in NPS 2 and above — flanged end connections, rising stem, and bodies cast from liquid metal poured into a mold. API 602 covers compact forged steel gate, globe, and check valves in NPS ½ to 4 — with socket weld, threaded, and butt weld ends in addition to flanged. The critical difference is the manufacturing process: forging compresses and aligns the steel grain structure under mechanical pressure, producing a denser, stronger body with no risk of casting porosity or hot tears.

In Saudi Aramco piping systems, API 602 forged valves appear at virtually every instrument root valve, ½-inch to 1½-inch drain and vent connections, gauge root valves, sample connections, chemical injection quills, and small-bore block and bypass valves on control valve stations. The SAEP-347 Annex 4 material number list includes high-volume items specifically for socket weld and threaded end A105N forged gate valves — these are among the most frequently ordered items in any Aramco EPC materials requisition.

In Summary

API 602 forged steel valves in ASTM A105N with socket weld ends (Class 800 and Class 1500) are the highest-volume small-bore valve item in Saudi Aramco process facility construction. Gulf Union Ozone stocks the full Class 800 and 1500 range in A105N from ½ inch to 4 inch NPS, with same-day dispatch and EN 10204 3.1 MTCs included.

API 602 vs API 600 — Quick Reference
Attribute API 602 API 600
ConstructionForgedCast
Size rangeNPS ½ – 4NPS 2 – 24+
End connectionsSW, NPT, BW, RFRF, RTJ flanged
Body materialA105N, A182A216 WCB, A351
Typical useRoot valves, instrumentsMain line isolation
Related Valve Pages
Stocked Range

API 602 Forged Valve Stock — Full Specification Range

Gate Valves (API 602)
Body MaterialA105N · A182 F316 · F11 · F22
Pressure ClassesClass 800 · 1500 · 2500
Size RangeNPS ½ – 4
End ConnectionsSW · Threaded · BW · RF Flanged
Stem TypeOS&Y rising stem · NRS
Test StandardAPI 598
Globe & Check Valves (API 602)
  • ▸Globe valves — A105N and A182 F316, Class 800–1500, SW and threaded, for throttling service
  • ▸Piston check valves — A105N and A182 F316, Class 800–1500, SW and threaded, NPS ½–2
  • ▸Y-pattern globe check valves — for high-temperature and high-pressure steam service
Documentation Package (Standard)
  • ▸EN 10204 3.1 MTC — ASTM A105N chemistry and mechanicals
  • ▸API 598 hydrostatic test report
  • ▸Certificate of Conformance (CoC)
  • ▸Normalized heat treatment certificate (for A105N)
Need API 602 A105N forged valves for a Saudi Aramco project?

Provide your SAEP-347 material number, valve type, size, class, end connection, and quantity. We confirm stock and pricing with EN 10204 3.1 MTCs within 4 business hours.

API 600 Gate Valves →

API 602 compact forged steel gate valves serve a distinct niche in Saudi Aramco SAEP-347 piping: small-bore process connections from NPS ½ to NPS 4 where Class 800 ASME B16.34 pressure ratings and socket-weld or threaded end connections are specified. The forged ASTM A105 or A182 F316L body provides substantially greater wall section thickness than equivalent-size cast valves, making API 602 the standard specification for high-pressure utility connections, instrument take-offs, drain and vent valves, and chemical injection quills across Aramco process facilities. A key procurement decision point: API 602 Class 800 is not interchangeable with API 600 Class 150 or Class 300 in SAEP-347 Annex 4 — each carries a distinct 4-digit material number and different body casting or forging EN 10204 3.1 documentation requirement. Gulf Union Ozone stocks API 602 forged steel gate valves in ASTM A105 and A182 F316L from NPS ½ to NPS 4 ex-Jeddah.

FAQ

Frequently Asked Questions — API 602 Forged Steel Valves

What does API 602 cover and why is it different from API 600?

API 602 covers compact forged steel gate valves in NPS ½ to 4 with Class 800 to 2500 ratings and socket weld, threaded, and butt weld end connections. API 600 covers full-bodied cast steel gate valves in NPS 2 and above with flanged ends. The key difference is construction: API 602 valves are forged from solid steel billet, eliminating casting porosity and producing a stronger grain structure. This makes API 602 the standard for small-bore (NPS ½ to 4), high-pressure instrument root valves, drain/vent connections, sample connections, and block valves on control valve stations in Saudi Aramco process facilities.

What body materials are available for API 602 forged steel valves?

API 602 forged valves are available in: ASTM A105N (carbon steel, normalized) — general-purpose up to 425 °C; ASTM A182 F316 (forged 316 stainless steel) — corrosive or stainless steel service; ASTM A182 F11 (1¼Cr-½Mo alloy) — high temperature above 425 °C; and ASTM A182 F22 (2¼Cr-1Mo) — hydrogen service and very high temperature refinery applications. The 'N' suffix on A105N indicates the normalized heat treatment required by most SAEP-347 Annex 4 carbon steel forged valve material numbers.

What end connections are available for API 602 forged valves and when is each used?

API 602 forged valves are available in socket weld (SW), threaded (NPT or BSPP), and butt weld (BW) end connections. Socket weld (Class 3000 and 6000) is the most common for process piping NPS ½ to 2 — the pipe end is inserted into the valve bore and fillet-welded. Threaded (Class 2000, 3000, 6000) is used for instrument root valves and utility connections where welding is not practical. Butt weld is used for NPS 2 to 4 welded piping systems. ASME B16.11 Class 6000 socket weld is approximately equivalent to ASME flanged Class 1500 pressure rating.

Does SAEP-347 Annex 4 include API 602 forged steel valve material numbers?

Yes. SAEP-347 Annex 4 includes material numbers for API 602 forged steel gate valves in ASTM A105N at Class 800 through 2500, covering socket weld and threaded end connections in NPS ½ to 4. These are among the highest-volume material numbers in the Annex 4 list because small-bore instrument root valves and block valves appear at every process unit. Gulf Union Ozone stocks the full API 602 A105N range — Class 800 and 1500, socket weld and threaded — in Jeddah with same-day dispatch.

Procurement documentation for API 602 forged steel valves under Saudi Aramco SAEP-347 includes five mandatory items at Goods Receipt inspection: an EN 10204 3.1 Mill Test Certificate for the forging confirming ASTM A105 or A182 chemical composition and mechanical properties; an API 598 hydrostatic test report with shell, seat, and closure test results at the API-specified pressures; a Certificate of Conformance referencing the applicable SAEP-347 Annex 4 material number for compact forged gate valves; a heat treatment record for A182 F316L stainless grades (solution-annealed condition required); and dimensional inspection confirmation against API 602 face-to-face and end-to-end dimensional tables. For NACE MR0175 sour service applications, the 3.1 MTC must additionally confirm Brinell hardness below 200 HB. Gulf Union Ozone assembles the complete documentation package for every API 602 forged valve order dispatched from Jeddah.

Get Started

Quote API 602 Forged Valves — A105N, In Stock Jeddah

Send your forged valve requirement — valve type (gate, globe, check), body material (A105N, F316, F11), pressure class (Class 800–2500), size (NPS), end connection (SW/threaded/BW), and SAEP-347 material number if available. We confirm stock availability with EN 10204 3.1 MTCs and API 598 test reports within 4 business hours from our Jeddah warehouse.

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Gulf Union Ozone Trading Co. · CR 4030570569 · Jeddah, Saudi Arabia