Check Valves Supplier Saudi Arabia

Check Valve Categories

Product Types in Stock

Gulf Union Ozone carries six check valve families to API 594, API 6D, API 602, BS 1868, and EN 12334, with full material traceability, NACE MR0175 sour service options, and API 598 test certification for every supply into Saudi Arabia oil & gas, petrochemical, and process industry projects.

Type 01

Swing Check Valve — Full Bore, API 6D

API 6D and BS 1868 swing check valves for oil and gas pipeline, pump discharge, and general process service in Saudi Arabia. Full-bore swing disc hinge-mounted to the body opens fully with forward flow and closes by gravity and back-pressure — providing low pressure drop and simple, reliable operation. Available in carbon steel WCB (ASME Class 150–1500), SS 316/316L, and duplex SS 2205. Flanged ends to ASME B16.5; butt-weld ends to ASME B16.25. Sizes DN50–DN900. API 598 shell and seat tested. Anti-slam external spring or weight option available.

Type 02

Dual Plate Wafer Check Valve — API 594

API 594 dual plate wafer check valves with spring-loaded split disc design for pump discharge and pipeline service in Saudi Arabia. The two parallel half-disc plates are spring-biased toward closed — they begin closing as flow decelerates, reaching the seat near zero reverse velocity and significantly reducing water hammer slam compared to swing check valves. Compact wafer body clamps between standard ASME flanges with minimal face-to-face length. Carbon steel body, SS 316L disc and spring, PTFE seat ring. Sizes DN50–DN600, ASME Class 150–2500. API 598 tested.

Type 03

Ball Check Valve — Vertical & Horizontal

Ball check valves using a free-floating or spring-assisted sphere to block reverse flow, suitable for vertical upward flow, chemical dosing pump discharge, and slurry service in Saudi Arabia industrial plants. The ball lifts off the seat on forward flow and drops to close on flow reversal — no hinge or disc arm to foul in dirty service. Available in carbon steel, SS 316L, and plastic body materials (PP, PVDF) for corrosive chemical service. Ball materials: SS 316L, Hastelloy, PTFE-coated, or rubber-covered for abrasive slurry. Sizes DN15–DN300.

Type 04

Lift Check / Piston Check Valve

Lift check valves and piston check valves for high-pressure gas and liquid service in Saudi Arabia oil and gas, refinery, and process plants. The disc (piston or poppet) lifts axially off the seat on forward flow and reseats on flow reversal — providing positive sealing with minimal disc travel for fast, slam-free closure. Suitable for horizontal installation with high flow velocities and high operating pressures. Forged carbon steel and SS 316L bodies per API 602; ASME Class 800–2500; sizes DN15–DN100. PTFE or metal-to-metal seat options. API 598 seat tested.

Type 05

Tilting Disc Check Valve — Low Slam

Tilting disc check valves for large pump discharge and pipeline service in Saudi Arabia where low pressure drop and controlled, low-slam closure are required. The single-piece disc is pivoted above its centre of gravity — as flow decelerates, the disc tilts to close without the full 90° swing of a conventional swing check, resulting in lower water hammer and reduced piping stress. Horizontal and inclined installation. Carbon steel body, SS 316L disc, EPDM seat option. Sizes DN80–DN600, ASME Class 150–600. API 598 tested. Anti-slam spring option for high-head pump discharge protection.

Type 06

Foot Valve — Pump Suction, Integral Strainer

Foot valves with integral suction strainer for pump suction lines in open sumps, tanks, reservoirs, and boreholes across Saudi Arabia. The foot valve is installed at the bottom of the suction pipe — the strainer screens out solids and the check valve holds liquid in the suction line when the pump stops, maintaining prime and preventing re-priming delays on restart. Cast iron or SS 316L body; EPDM or NBR disc seal; SS 316L or PVC strainer basket; perforated or mesh strainer. Sizes DN25–DN300. Brass screwed versions for small water pumps.

Product Catalog

Complete Check Valves Range — 27+ Products

All check valves supplied with API 598 shell and seat test certificates, EN 10204 3.1 MTCs on request, and NACE MR0175 hardness test records for sour service supply. SASO certified for Saudi Arabia market. ISO 9001:2015 QMS (CR 4030570569). Inventory updated September 2026.

Product	Standard / Spec	Material / Construction	Size / Rating / Capacity	Application
Swing Check Valve — CS WCB, Class 150 (Flanged)	API 6D / BS 1868 / ASME B16.34 / API 598	CS WCB body, SS 316 disc, SS hinge pin, PTFE/NBR seat, ASME B16.5 flanges	DN50–DN900 / ASME Class 150 / −29°C to +425°C	Oil & gas pipeline, pump discharge, cooling water — Saudi Arabia general service
Swing Check Valve — CS WCB, Class 300 (Flanged)	API 6D / BS 1868 / ASME B16.34 / API 598	CS WCB body, SS 316L disc, SS hinge pin, graphite packing, ASME B16.5 flanges	DN50–DN600 / ASME Class 300 / −29°C to +425°C	Higher-pressure pipeline, pump discharge — Saudi Aramco refinery and gas plant
Swing Check Valve — CS WCB, Class 600 (Flanged)	API 6D / BS 1868 / ASME B16.34 / API 598	CS WCB body, SS 316L disc, Gr. B7 studs, graphite spiral-wound gaskets	DN50–DN400 / ASME Class 600 / −29°C to +425°C	Medium-pressure oil, gas, and condensate pipeline service — KSA
Swing Check Valve — SS 316L Body, Class 150	API 6D / BS 1868 / ASME B16.34 / API 598	SS 316L body & disc, SS 316L hinge pin, PTFE seat, EN 10204 3.1 MTC	DN50–DN600 / ASME Class 150 / −196°C to +400°C	Chemical process, seawater, corrosive service — Saudi Arabia petrochemical
Swing Check Valve — Duplex SS 2205, NACE MR0175, Class 300	API 6D / NACE MR0175 / ISO 15156 / API 598	Duplex SS 2205 body & disc, controlled hardness ≤22 HRC, EN 10204 3.1 MTC, PMI	DN50–DN400 / ASME Class 300 / −46°C to +250°C	H2S sour service, seawater, coastal upstream — Saudi Aramco sour gas fields
Swing Check Valve — CS WCB, API 6D Pipeline, Class 900–1500	API 6D / ASME B16.34 / ASME B16.5 / API 598	CS WCB body, SS 316L disc, Inconel spring, graphite packing, B7 studs	DN50–DN300 / ASME Class 900–1500 / −29°C to +425°C	High-pressure gas transmission, crude oil pipeline — Saudi Aramco mainlines
Swing Check Valve — CS WCB, Butt-Weld Ends, API 6D	API 6D / ASME B16.25 / ASME B31.4 / ASME B31.8	CS WCB body, SS 316 disc, BW ends to ASME B16.25, API 598 tested	DN50–DN600 / ASME Class 150–600 / BW schedule matched to pipe spec	Buried and subsea pipeline, pig-launcher bypass, Saudi Aramco transmission
Dual Plate Wafer Check Valve — CS Body, SS 316L Disc, Class 150	API 594 / ASME B16.34 / API 598 / SASO	CS body (WCB), SS 316L dual disc & torsion springs, PTFE seat ring, SS hinge pin	DN50–DN600 / ASME Class 150 / −29°C to +200°C	Pump discharge anti-slam protection, pipeline — low water hammer, Saudi Arabia
Dual Plate Wafer Check Valve — CS Body, SS 316L Disc, Class 300	API 594 / ASME B16.34 / API 598	CS body (WCB), SS 316L discs & springs, Viton seat ring, SS hinge pin	DN50–DN400 / ASME Class 300 / −29°C to +260°C	Hydrocarbon pump discharge, condensate, process loop — Saudi Aramco EPC
Dual Plate Wafer Check Valve — CS Body, Class 600	API 594 / ASME B16.34 / API 598	CS body, SS 316L discs, Inconel springs, metal or PTFE seat, graphite packing	DN50–DN300 / ASME Class 600 / −29°C to +425°C	High-pressure pump and compressor discharge — Saudi Aramco gas compression
Dual Plate Wafer Check Valve — Class 900–2500 (High Pressure)	API 594 / ASME B16.34 / API 598	CS or SS 316L body, SS 316L discs, Inconel springs, metal seat, Gr. B7 studs	DN50–DN200 / ASME Class 900–2500 / −46°C to +425°C	HP gas compressor discharge, water injection pump — Saudi Arabia oil & gas
Dual Plate Wafer Check Valve — Duplex SS 2205, NACE MR0175	API 594 / NACE MR0175 / ISO 15156 / API 598	Duplex SS 2205 body, discs & springs, controlled hardness, EN 10204 3.1 MTC, PMI	DN50–DN400 / ASME Class 150–600	Sour crude and H2S gas pump discharge — Saudi Aramco upstream sour service
Dual Plate Wafer Check Valve — Full SS 316L (Chemical)	API 594 / ASME B16.34 / API 598 / SASO	SS 316L body, discs, springs, and hinge pin; PTFE seat ring, EN 10204 3.1 MTC	DN50–DN400 / ASME Class 150–300 / −196°C to +400°C	Chemical pump discharge, seawater, corrosive process — Saudi Arabia
Ball Check Valve — Carbon Steel or SS 316L (General Service)	BS 6755 / EN 12334 / ISO 10631 / ASME B16.34	CS or SS 316L body, SS 316L ball, NBR or PTFE seat, threaded or flanged ends	DN15–DN200 / ASME Class 150–600 / Vertical or horizontal installation	Pump discharge, water treatment, general process — Saudi Arabia industrial
Ball Check Valve — PVDF Body (Chemical / Dosing Pump)	EN 12334 / ISO 10631 / ATEX anti-static option	PVDF (Kynar) body, PVDF or PTFE ball, PTFE seat, threaded or flanged ends	DN15–DN100 / PN10–PN16 / −20°C to +130°C	Chemical dosing pump discharge, HF acid, chlorine service — Saudi water plant
Ball Check Valve — Hastelloy C-276 (Aggressive Chemical)	EN 12334 / ISO 10631 / ASME B16.34	Hastelloy C-276 (UNS N10276) body & ball, PTFE seat, EN 10204 3.1 MTC	DN15–DN100 / ASME Class 150–300 / −40°C to +200°C	HCl, H2SO4, mixed acid dosing pump discharge — Saudi chemical facilities
Lift Check / Piston Check Valve — Forged CS, Class 800–1500	API 602 / ASME B16.34 / API 598	Forged CS (ASTM A105) body, SS 316L piston & seat, PTFE packing, SW or BW ends	DN15–DN100 / ASME Class 800–1500 / −29°C to +425°C	Compressor discharge, HP steam, high-pressure gas — fast slam-free closure
Lift Check / Piston Check Valve — Forged SS 316L, Class 800–1500	API 602 / ASME B16.34 / API 598 / SASO	Forged SS 316L (ASTM A182 F316L) body & piston, PTFE seat, SW or BW ends	DN15–DN100 / ASME Class 800–1500 / −196°C to +400°C	Corrosive compressor discharge, chemical process, sour gas — Saudi Aramco
Tilting Disc Check Valve — CS/SS 316L, Class 150–600	API 6D / BS 1868 / ASME B16.34 / API 598	CS or SS 316L body, SS 316L tilting disc offset above centreline, EPDM or PTFE seat	DN80–DN600 / ASME Class 150–600 / Horizontal or inclined installation	Large pump discharge, water injection, cooling water — low water hammer KSA
Tilting Disc Check Valve — Anti-Slam Spring Assist, Pipeline	API 6D / BS 1868 / API 598	CS body, SS 316L disc with external spring-closing assist, EPDM or metal seat	DN150–DN600 / ASME Class 150–600 / Anti-slam performance certified	High-head pump discharge, Saudi Aramco booster stations — water hammer control
Foot Valve — Cast Iron with SS Strainer (Water Service)	BS 5153 / DIN 3271 / ISO 13402	Cast iron body, EPDM disc seal, SS 316L strainer basket, screwed or flanged inlet	DN25–DN300 / PN10–PN16 / Vertical suction installation	Pump suction priming retention — sumps, tanks, reservoirs, Saudi Arabia water
Foot Valve — SS 316L with Strainer (Chemical / Process)	BS 5153 / DIN 3271 / ISO 13402	SS 316L body, PTFE disc seal, SS 316L strainer basket, flanged inlet	DN25–DN200 / PN10–PN16 / Vertical installation	Chemical pump suction, corrosive sump drainage — Saudi Arabia process plants
Forged Compact Check Valve — API 602, Class 800, SW Ends	API 602 / ASME B16.34 / API 598 / SASO	Forged CS (A105) body, SS 316 disc, PTFE seat, socket-weld ends ASME B16.11	DN15–DN50 / ASME Class 800 / SW ends / −29°C to +425°C	Instrument and utility small-bore check service — Saudi Arabia EPC projects
Forged Compact Check Valve — API 602, Class 800, BW Ends	API 602 / ASME B16.34 / API 598	Forged CS (A105) body, SS 316 disc, PTFE seat, butt-weld ends ASME B16.25	DN15–DN50 / ASME Class 800 / BW ends / −29°C to +425°C	High-pressure instrument line, HP steam small-bore check service
PTFE-Lined Wafer Check Valve — Corrosive Chemical	EN 12334 / ISO 10631 / SASO	CS body with full PTFE lining & disc, PTFE-coated spring, flanged wafer style	DN50–DN300 / PN10–PN16 / −10°C to +150°C	Acid dosing pump discharge, caustic, chlorinated chemical — Saudi plant
High-Pressure Pipeline Check Valve — API 6D, Class 900–2500	API 6D / ASME B16.34 / API 598 / NACE MR0175 option	CS WCB or SS 316L body, full-bore swing disc, metal-to-metal seat, Gr. B7 studs	DN50–DN300 / ASME Class 900–2500 / −29°C to +425°C	HP gas and crude pipeline, water injection — Saudi Aramco high-pressure mainlines
Fire-Safe Swing Check Valve — API 607 Certified	API 6D / API 607 / API 598 / ASME B16.34	CS WCB body, SS 316L disc, graphite fire-safe seat backup, SS hinge pin	DN50–DN600 / ASME Class 150–600 / API 607 fire-safe certified	Hydrocarbon pipeline isolation — fire-safe per Saudi Aramco SAES-L-108

Why Us

Why Industrial Buyers in Saudi Arabia Choose Gulf Union Ozone for Check Valves

📋

API 594 & API 6D Certified Documentation

All check valves supplied by Gulf Union Ozone come with API 598 shell and seat leakage test certificates, EN 10204 3.1 material test certificates for all wetted parts, dimensional inspection reports, and painting records. API 6D pipeline check valves are supplied with full traceability documentation and ASME B16.34 compliance records. Complete MDR packages are compiled for Saudi Aramco and SABIC project handover. Third-party witness inspection by Bureau Veritas, Intertek, or SGS arranged on request.

📦

Anti-Slam & Low-Pressure-Drop Designs

Gulf Union Ozone offers the full spectrum of check valve closing technologies for pipeline protection in Saudi Arabia — from spring-assisted dual plate wafer valves (API 594) for low water hammer on pump trip, to tilting disc valves with external anti-slam spring assist for large-bore high-head pump discharge service. Selection guidance available based on flow velocity, pump head, and line size to identify the optimal valve type and avoid costly pipeline damage from pressure surges.

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NACE MR0175 Sour Service Options

Gulf Union Ozone stocks NACE MR0175 / ISO 15156 compliant check valves for H2S sour service in Saudi Arabia upstream, midstream, and refinery applications. Carbon steel bodies with controlled hardness (≤22 HRC), SS 316L and duplex SS 2205 NACE-compliant trim, and full hardness test records and PMI documentation are supplied with each NACE order. Duplex SS 2205 and super duplex 2507 fully alloy check valves for combined sour-plus-seawater service are also available.

🗺

Jeddah Stock & Saudi Nationwide Delivery

Common swing check and dual plate wafer check valve sizes — DN50 to DN400 in ASME Class 150 to 600 — are stocked in Jeddah for immediate dispatch to all 18 Saudi regions, including Jubail Industrial City, Yanbu, Dammam, Riyadh, and the Eastern Province. ISO 9001:2015 certified (CR 4030570569). SASO certified for Saudi Arabia market. Same-day despatch on in-stock items. Emergency supply for plant shutdowns. WhatsApp 966550988062 for urgent requirements.

Also Stocked at Gulf Union Ozone

Valves

Industrial Valves

Gate, globe, check, ball, and butterfly valves in SS 316L, duplex SS, and carbon steel — API 600, API 602, ASME B16.34 — for oil & gas, petrochemical, and process industry in Saudi Arabia.

Pumps

Centrifugal Pumps

API 610 centrifugal pumps — OH1/OH2, BB1/BB2/BB3, VS1/VS4 — in SS 316L, duplex SS, and Hastelloy for oil & gas, seawater, and chemical service across Saudi Arabia.

Piping

Pipe Fittings

Elbows, tees, reducers, flanges, and caps in SS 316L, carbon steel, duplex SS, and alloy steel — ASME B16.9, ASME B16.5, ASME B16.47 — for oil & gas piping in Saudi Arabia.

Pumps

Water Pumps

Submersible, surface, and booster water pumps for municipal, agricultural, and industrial water supply in Saudi Arabia — from portable units to large-capacity multi-stage systems.

Frequently Asked Questions

Check Valves in Saudi Arabia — Common Questions

What types of check valves do you supply for Saudi Arabia oil & gas pipelines?

Gulf Union Ozone supplies a comprehensive range of check valve types for oil and gas pipeline, pump, and compressor applications across Saudi Arabia, including Saudi Aramco and SABIC facilities. For large-diameter pipeline service, we supply swing check valves to API 6D (pipeline valves) in carbon steel WCB and WCC, sizes DN50–DN900, ASME Class 150–1500, with full-bore or reduced-bore disc — these are the most common pipeline check valve type specified by Saudi Aramco. For pump discharge protection where low pressure drop and fast response are critical, we supply dual plate wafer check valves to API 594 — spring-loaded, spring-biased to closed, with split parallel disc design that closes before reverse flow develops, dramatically reducing water hammer slam. For high-pressure gas and liquid compressor discharge service, lift check and piston check valves in ASME Class 600–2500 are available in SS 316L and forged carbon steel per API 602. Tilting disc check valves are used in large pump discharge and pipeline service where minimal pressure drop and a controlled, low-slam closure is required — the disc is offset from the hinge point so it self-closes by gravity with reduced slamming impact. Ball check valves are suited for vertical upward flow and chemical dosing pump discharge in Saudi Arabia water treatment and process plants. Foot valves with integral suction strainer are available for pump sumps and open reservoirs. Contact us with your line conditions for a type recommendation and quotation.

How do I select between swing check and dual plate check valves?

Selecting between swing check and dual plate wafer check valves for Saudi Arabia industrial applications involves evaluating several key factors — pressure drop, slam risk, installation space, cost, and process conditions. Swing check valves have a full-bore swing disc that opens by flow and closes by gravity and back-pressure. Their simple design and full-bore flow path give low pressure drop in fully open position, making them suitable for large-diameter, lower-velocity pipeline service where space permits a flanged-end valve of full face-to-face length. However, swing checks close slowly when flow stops or reverses — the disc travels through 90° before seating — which can produce significant slam (water hammer) on pump trip if flow velocity is high or the pump head is large. For this reason, Saudi Aramco pipeline specifications often require swing checks to be supplemented with anti-slam devices for high-risk pump discharge applications. Dual plate wafer check valves (API 594) solve the slam problem by using two half-disc plates spring-biased toward closed — the plates begin closing as flow velocity drops toward zero, reaching the seat with minimal reverse flow velocity and almost no hammer. The wafer body is also significantly shorter and lighter than a full-bore swing check, reducing piping loads and costs. The trade-off is a higher pressure drop at partial opening due to the split disc and torsion springs. Dual plate wafers are the preferred choice for high-head centrifugal pump discharge lines in Saudi Arabia refineries, water injection plants, and booster stations. Contact Gulf Union Ozone for a sizing and selection review for your specific application.

Do you supply NACE MR0175 compliant check valves for sour service in Saudi Arabia?

Yes. Gulf Union Ozone supplies NACE MR0175 / ISO 15156 compliant check valves for hydrogen sulphide (H2S) sour service in Saudi Arabia oil and gas upstream, midstream, and refinery applications. NACE MR0175 governs materials for equipment in petroleum production environments containing H2S, specifying maximum hardness limits for metallic components to prevent sulphide stress cracking (SSC) and hydrogen-induced cracking (HIC). For carbon steel swing check valves in sour service, we supply ASTM A216 WCB or WCC body castings with controlled hardness to 22 HRC maximum, verified by hardness testing records. Trim materials including disc, seat ring, hinge pin, and bolting are supplied in NACE-compliant grades — 13% chrome SS, SS 316L, or duplex SS 2205 with hardness controlled to NACE MR0175 requirements. For applications requiring full alloy wetted construction to resist chloride stress corrosion in addition to H2S — common in Saudi Arabia offshore and coastal environments — we supply fully SS 316L or duplex SS 2205 check valves, all wetted parts with hardness-controlled forgings or castings and EN 10204 3.1 material test certificates. Super duplex SS 2507 is available for the most aggressive sour-plus-chloride combined environments. NACE MR0175 Section 1 compliance (for oil and gas production) or Section 2 (for refinery) is documented with each supply, along with hardness test records and PMI. Contact us with your H2S partial pressure, chloride content, and temperature for material selection guidance and quotation.

Get a Quote

Request a Check Valves Quotation

To get a fast quotation, provide: valve type (swing / dual plate / ball / lift / tilting disc / foot valve), body end connection (wafer / flanged / butt-weld / socket-weld), size (DN or inch), pressure class (PN or ASME Class), body material (CS WCB / SS 316L / duplex SS / PVDF), seat material (PTFE / Viton / NBR / metal), fluid service (water / oil / gas / chemical), operating temperature (°C), NACE MR0175 requirement (yes/no), H2S content (ppm), required standard (API 594 / API 6D / API 602 / BS 1868), quantity, and delivery location in Saudi Arabia.

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Recent Deliveries

• Dual plate wafer check valves (API 594, SS 316L, Class 600) for high-pressure pump discharge at a Saudi Aramco facility, 2026
• Swing check valves (API 6D, CS WCB, Class 300) for gas pipeline service at an Eastern Province compression station, 2026
• Ball check valves (PVDF body) for chemical dosing pump discharge at a water treatment plant in Riyadh, 2026

CR 4030570569 | ISO 9001:2015 | Jeddah, Saudi Arabia — Saudi Aramco vendor compliance · SAEP-347 credentials

Check Valves Supplier Saudi Arabia — Swing, Dual Plate, Ball Check & Lift Check Valves In Stock