Pressure Relief Valves & Rupture Discs — Saudi Arabia

Pressure Relief Valves & Rupture Discs Supplier Saudi Arabia — PRVs, POSRVs, Back-Pressure Regulators & Bursting Discs In Stock

Gulf Union Ozone supplies a complete range of overpressure protection devices for oil & gas, petrochemical, refining, and process industry facilities across Saudi Arabia. Our portfolio covers spring-loaded pressure relief valves (conventional and balanced bellows), pilot-operated safety relief valves (POSRVs/POSVs — snap-acting and modulating), back-pressure regulators (self-actuated and pilot-operated), rupture discs (graphite, stainless steel 316/316L, Inconel 718), bursting disc holders (single-section, full-bore bolted, sanitary tri-clamp), and combined rupture disc plus PRV two-device assemblies to API 520. Standards: API 520 Part I/II, API 521, ASME Section VIII UG-125/UG-126, EN ISO 4126 Parts 1–7, PED 2014/68/EU. SASO certified for Saudi Arabia market. SIL 2/3 rated options available for SIS applications. ISO 9001:2015 certified (CR 4030570569). Stocked and dispatched from Jeddah.

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Pressure relief valves and rupture discs for oil and gas and petrochemical service in Saudi Arabia — Gulf Union Ozone Jeddah
StandardsAPI 520 I/II · API 521 · ASME VIII UG-125/UG-126 · EN ISO 4126 · PED 2014/68/EU · SASO
MaterialsSS 316/316L Body & Trim · Inconel 718 Springs · PTFE/PEEK Seats · Graphite/SS/Inconel Rupture Discs
RangeDN 15–DN 400 / 0.5–690 bar Set Pressure / Cryogenic to 815°C
SIL OptionsSIL 2 & SIL 3 Rated POSRVs — FMEDA Reports Available
QualityISO 9001:2015 — Jeddah Warehouse
Pressure Relief Device Categories

Product Types in Stock

Gulf Union Ozone carries six pressure relief and overpressure protection device families to internationally recognised API, ASME, EN ISO, and PED standards, with full material traceability and certification documentation for every supply into Saudi Arabia oil & gas and petrochemical projects.

Type 01

Spring-Loaded Pressure Relief Valves (PRVs)

Conventional and balanced-bellows spring-loaded pressure relief valves to API 526 (flanged steel) and ASME Section VIII UG-126 for gas, vapour, and liquid overpressure protection in Saudi Arabia oil & gas and petrochemical facilities. Conventional PRVs in SS 316/316L body and trim with Inconel 718 springs — suitable for superimposed back-pressure up to 10% of set pressure. Balanced-bellows PRVs for variable superimposed or built-up back-pressure up to 50% of set pressure, corrosive service, or where back-pressure variation would otherwise affect set pressure accuracy. Full-nozzle and semi-nozzle configurations; full-lift (liquid) and high-lift (gas/vapour) types. PTFE or PEEK soft seat rings for tight shut-off on gas service; metal-to-metal seats for high-temperature or steam service. Set pressure range 0.5–690 bar; orifice areas API 526 designations D through T. ASME UV-stamp and EN 10204 3.1 MTCs available.

Type 02

Pilot-Operated Safety Relief Valves (POSRVs / POSVs)

Snap-acting and modulating pilot-operated safety relief valves (POSRVs/POSVs) to API 520 Part I and ASME Section VIII for high-capacity, high set-pressure, or high back-pressure applications in Saudi Arabia refineries and gas processing plants. Main valve operates at up to 98% of set pressure (versus 90–95% for spring-loaded PRVs), maximising vessel operating pressure and minimising unnecessary lifting. Snap-acting pilots for gas/vapour service; modulating pilots for liquid and multi-phase service to avoid full-flow relief events. Remote sensing pilots available for column or long-line pressure sensing. SS 316L wetted bodies; Inconel 718 springs; PTFE pilot seat; carbon steel or SS main valve body. SIL 2 and SIL 3 rated assemblies with FMEDA reports available for IEC 61508/61511 SIS applications. Set pressures 1.5–690 bar; sizes DN 25–DN 400 main valve orifice.

Type 03

Back-Pressure Regulators

Self-actuated and pilot-operated back-pressure regulators for process pressure control, gas gathering systems, and separator back-pressure management in Saudi Arabia oil & gas upstream and midstream facilities. Self-actuated spring-and-diaphragm back-pressure regulators for low-to-medium flow gas service — set pressure ranges 0.1–100 bar; SS 316L body and trim; PTFE and Buna-N diaphragm and seat options; sizes 1/2" to 4" NPT and flanged. Pilot-operated back-pressure regulators for high-accuracy control ±0.5% of set point, high-flow or high-pressure service, and remote set-point adjustment — SS 316 body, Inconel trim option, PTFE pilot, sizes 1" to 12" flanged. Suitable for sour service (NACE MR0175 / ISO 15156) with appropriate material selection. Spring ranges supplied with calibration certificates; complete with gauge, isolation valve, and bypass arrangement on request.

Type 04

Rupture Discs — Graphite, Stainless Steel & Inconel

A complete range of rupture discs (bursting discs) to EN ISO 4126-2 and ASME Section VIII UG-127 for overpressure protection and process isolation in Saudi Arabia oil & gas, petrochemical, and chemical facilities. Flat graphite rupture discs for low-pressure gas and vapour service (0.05–3 bar), chemical compatibility with acids and alkalis, operating ratio up to 95%. Forward-acting scored stainless steel (SS 316/316L) discs for gas, liquid, and two-phase service — burst pressures 0.1–700 bar, sizes DN 15–DN 500, operating ratio 85–95%. Reverse-acting (buckling pin) stainless steel discs for high back-pressure resistance, low operating pressure ratios, and non-fragmenting performance. Inconel 718 rupture discs for elevated temperatures up to 815°C, corrosive atmospheres (H2S, HF, amines), and high-pressure service. Composite graphite-stainless laminated discs for chemical compatibility combined with high burst-pressure accuracy. All discs supplied with certified burst pressure test certificate traceable to NPL or PTB primary standards.

Type 05

Bursting Disc Holders & Installation Hardware

Full range of bursting disc holders and installation hardware to EN ISO 4126-2 and ASME Section VIII for safe and correct installation of rupture discs in Saudi Arabia process plants and pipeline systems. Single-section disc holders (upstream half only) for inlet-side installation; full two-section holders for sandwich installation between standard ASME 150# to 2500# or EN PN 16 to PN 420 flanges — sizes DN 15 to DN 500. Full-bore bolted rupture disc holders in carbon steel or SS 316/316L for maximum flow capacity with zero flow restriction. Sanitary tri-clamp (Tri-Clamp / DIN 32676) holders in electropolished SS 316L for pharmaceutical, food, and fine chemical applications. Rupture disc inlet isolation valves (knife-gate type) for disc changeout without system depressurisation. Burst detection sensors (pressure switch, continuity wire, or optical) for DCS alarm on disc actuation. Installation torque tools and alignment pins supplied to ensure repeatable burst pressure accuracy. Spare disc kits available for immediate site replacement.

Type 06

Combined Rupture Disc + PRV Assemblies

Combined two-device overpressure protection assemblies — rupture disc installed upstream of a spring-loaded PRV — to API 520 Part I Section 3.14 and ASME Section VIII UG-132 for applications requiring PRV protection from dirty or corrosive process fluids in Saudi Arabia. The rupture disc prevents process media contact with the PRV seat and internals, eliminates valve seat leakage to atmosphere, and allows use of a lower-cost CS PRV body behind an SS or Inconel rupture disc. Combined assembly sizing accounts for the pressure drop across the disc holder and the 10% capacity deration required by ASME UG-132(a). Standard assemblies in sizes 1" to 8" flanged (ASME 150# to 1500#); rupture disc materials SS 316L, Inconel 718, or graphite; PRV in SS 316/316L or carbon steel body with Inconel springs. Pressure accumulation space between disc and PRV fitted with pressure indicator and vent/drain to detect premature disc burst. Full assembly supplied with ASME UV-stamp and combined manufacturer data report.

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صمامات تخفيف الضغط — الأنواع والمواد والمعايير

Product Catalog

Complete Pressure Relief Valves & Rupture Discs Range — 27+ Products

All devices supplied with burst pressure or set pressure certificates, EN 10204 3.1 MTCs on request, and ASME UV-stamp documentation where applicable. SASO certified for Saudi Arabia market. ISO 9001:2015 QMS (CR 4030570569).

Grade / Type Size / Range Standard Material Application
Spring-Loaded PRV — Conventional, Full Nozzle (Gas/Vapour) DN 15–DN 150 / Set 0.5–345 bar / Orifice D–P API 526 / API 520 Part I / ASME VIII UG-126 SS 316 body & trim, Inconel 718 spring, PTFE seat Gas/vapour overpressure protection — vessels, heat exchangers, pipelines
Spring-Loaded PRV — Conventional, Semi-Nozzle (Liquid) DN 15–DN 100 / Set 1–250 bar / Orifice D–N API 526 / API 520 Part I / ASME VIII UG-125 SS 316L body, SS 316 trim, Inconel spring, PEEK seat Liquid relief — pump discharge, heat exchanger thermal relief, blocked-in lines
Spring-Loaded PRV — Balanced Bellows (High Back-Pressure) DN 25–DN 200 / Set 1–350 bar / Back-pressure to 50% API 526 / API 520 Part I / ASME VIII / EN ISO 4126-1 SS 316L body, SS 316 trim, Inconel spring, SS 316L bellows Variable or high back-pressure service — manifolded relief headers, flare systems
Spring-Loaded PRV — Carbon Steel Body (Low-Cost, Non-Corrosive) DN 25–DN 250 / Set 0.5–250 bar API 526 / ASME VIII / EN ISO 4126-1 / PED 2014/68/EU Carbon steel body, SS 316 trim, Inconel 718 spring, soft seat Non-corrosive steam, air, and water utilities — general plant service
Spring-Loaded PRV — High-Temperature Service (to 600°C) DN 25–DN 150 / Set 2–250 bar / -196°C to 600°C API 526 / ASME VIII / EN ISO 4126-1 SS 316H or alloy 825 body, Inconel 718 spring, metal seat High-temperature steam, fired heaters, reformer effluent — Saudi Aramco refinery
Spring-Loaded PRV — Cryogenic Service (to -196°C) DN 15–DN 100 / Set 0.5–100 bar / down to -196°C API 520 / ASME VIII / EN ISO 4126-1 / PED SS 316L body, Inconel 718 spring, PTFE seat, cold-box compatible LNG, LPG, liquid nitrogen, cryogenic storage — cold box and vacuum-jacketed vessel
Pilot-Operated Safety Relief Valve (POSRV) — Snap-Acting DN 25–DN 400 / Set 1.5–690 bar / Main orifice D–T API 520 Part I / ASME VIII UG-125 / EN ISO 4126-4 SS 316L main valve body, Inconel 718 spring, PTFE pilot seat Gas/vapour service — vessels operating at up to 98% of set pressure, flare system
Pilot-Operated Safety Relief Valve (POSRV) — Modulating DN 25–DN 300 / Set 1.5–500 bar API 520 Part I / ASME VIII / EN ISO 4126-4 SS 316L body, Inconel trim, PTFE pilot, PEEK main seat Liquid and two-phase service — avoids water hammer and full-flow relief surge
POSRV — Remote Sensing Pilot (Column / Long-Line) DN 50–DN 300 / Set 0.5–350 bar / Remote pilot tubing to 30 m API 520 Part I / ASME VIII / EN ISO 4126-4 SS 316L body and pilot tubing, Inconel spring, PTFE seat Distillation columns, tall vessels — sensing at actual process pressure point
POSRV — SIL 2/3 Rated Assembly (IEC 61508) DN 25–DN 200 / Set 1.5–350 bar / SIL 2 or SIL 3 IEC 61508 / IEC 61511 / API 520 / ASME VIII SS 316L wetted body, Inconel 718 spring, PTFE pilot, position indicator SIS final element — SIL-rated overpressure protection, Saudi Aramco SIS projects
Back-Pressure Regulator — Self-Actuated, Spring-Diaphragm 1/2"–4" NPT/flanged / Set 0.1–100 bar API 520 / EN ISO 4126-7 / PED 2014/68/EU SS 316L body & trim, PTFE diaphragm, Buna-N seat, Inconel spring Gas gathering, separator back-pressure, wellhead pressure control in Saudi Arabia
Back-Pressure Regulator — Pilot-Operated, High Accuracy 1"–12" flanged / Set 0.5–250 bar / ±0.5% accuracy API 520 / ASME VIII / EN ISO 4126-7 / PED SS 316 body, Inconel trim option, PTFE pilot seat, NACE MR0175 option High-flow gas or liquid back-pressure control — refinery, gas plant, pipeline
Rupture Disc — Flat Graphite (Low-Pressure Gas/Vapour) DN 15–DN 500 / Burst pressure 0.05–3 bar / to 260°C EN ISO 4126-2 / ASME VIII UG-127 / PED 2014/68/EU Graphite disc with SS support ring; certified burst pressure ±5% Chemical reactor relief, corrosive gas vent, acid tank overpressure protection
Rupture Disc — Forward-Acting Scored SS 316/316L (Gas & Liquid) DN 15–DN 500 / Burst 0.1–700 bar / -196°C to 400°C EN ISO 4126-2 / ASME VIII UG-127 / PED / SASO SS 316/316L disc, laser-scored, non-fragmenting; certified ±5% burst General oil & gas overpressure protection — vessels, reactors, heat exchangers
Rupture Disc — Reverse-Acting (Buckling Pin) SS 316L DN 25–DN 400 / Burst 0.07–100 bar / High back-pressure rated EN ISO 4126-2 / ASME VIII UG-127 SS 316L disc, non-fragmenting, full-bore opening on actuation High cyclic pressure service, vacuum-rated vessels, back-pressure resistant applications
Rupture Disc — Inconel 718 (High Temperature / Corrosive) DN 15–DN 300 / Burst 0.5–350 bar / to 815°C EN ISO 4126-2 / ASME VIII / NACE MR0175 option Inconel 718 disc; EN 10204 3.1 MTC; PMI on request H2S sour gas, HF acid alkylation, amine units — high-temp corrosive duty
Rupture Disc — Composite Graphite-SS Laminated DN 25–DN 400 / Burst 0.05–50 bar / to 260°C EN ISO 4126-2 / ASME VIII / PED 2014/68/EU Graphite process face, SS 316L support layer, PTFE liner option Chemical compatibility + higher burst pressure — acids, caustics, chlorinated solvents
Rupture Disc — Pre-Scored PTFE-Lined SS 316L DN 15–DN 200 / Burst 0.3–100 bar / to 200°C EN ISO 4126-2 / ASME VIII / PED SS 316L disc with full PTFE process-side lining, non-fragmenting score Halogen service, HCl, NaOH — chemical plant and water treatment in Saudi Arabia
Bursting Disc Holder — Single-Section (Inlet Side) DN 15–DN 500 / ASME 150#–2500# or EN PN16–PN420 EN ISO 4126-2 / ASME VIII UG-127 / PED 2014/68/EU SS 316L or carbon steel holder body; matched to disc OD Standard inlet disc holder — upstream of PRV or vent line
Bursting Disc Holder — Full-Bore Bolted, Two-Section DN 15–DN 500 / ASME 150#–2500# flanged EN ISO 4126-2 / ASME VIII / PED 2014/68/EU SS 316L or CS holder; full-bore bore — zero flow restriction High-capacity relief — maximum rated orifice, vacuum service, two-phase flow
Bursting Disc Holder — Sanitary Tri-Clamp (Pharma / Food) 1/2"–6" Tri-Clamp / DIN 32676 / ISO 2852 EN ISO 4126-2 / ASME VIII / EHEDG / PED Electropolished SS 316L holder, Ra <0.8 µm internal finish Pharmaceutical, food and beverage, biotech — hygienic overpressure protection
Combined Rupture Disc + PRV Assembly (API 520 / ASME UG-132) 1"–8" flanged (ASME 150#–1500#) / Set to 350 bar API 520 Part I Sec. 3.14 / ASME VIII UG-132 / PED SS 316L disc (or Inconel), CS or SS PRV body, Inconel spring Dirty/corrosive service PRV protection — eliminates seat fouling and fugitive emissions
Combined Rupture Disc + PRV — High-Pressure Assembly 1"–6" flanged (ASME 600#–2500#) / Set 35–690 bar API 520 Part I / ASME VIII UG-132 / EN ISO 4126 Inconel 718 disc, SS 316L PRV body, Inconel spring, PEEK seat High-pressure reactor, gas compression, HP separator — refinery, gas plant
Burst Detection Sensor / Disc Indicator (Pressure Switch) 1/4" NPT / 4–20 mA or SPDT relay / IP65–IP67 CE / IEC 60529 / ATEX II 2G option (Zone 1) SS 316 wetted parts, polycarbonate or aluminium housing DCS alarm on disc actuation — mandatory for ASME UG-132 combination assemblies
Explosion Vent Panel (Building / Silo / Low-Pressure) Custom area 0.1–10 m² / Burst 0.005–0.1 barg EN ISO 4126-2 / EN 14797 / ATEX 2014/34/EU Aluminium alloy or SS 316L panel with EPDM seal Dust explosion protection — grain silos, spray dryers, battery rooms in Saudi Arabia
Low-Lift PRV — Steam Service (ASME PTC 25) DN 25–DN 150 / Set 1–170 bar / Saturated or superheated steam ASME Section I (boiler) or VIII / PTC 25 / PED Carbon steel or alloy body, SS trim, Inconel 718 spring, metal seat Steam boiler and steam drum overpressure protection — power and utilities in KSA
PRV Repair & Recertification Service (In-Kingdom) All makes and sizes — set pressure re-certification and tag API 527 seat leakage / API 576 inspection / ASME VIII Genuine OEM or approved equivalent replacement springs and seats PRV annual inspection, repair, and set pressure re-certification — Saudi facilities
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نطاق ضغط الضبط وتصنيفات الفتحة وشهادات المطابقة

Why Us

Why Industrial Buyers in Saudi Arabia Choose Gulf Union Ozone for Pressure Relief Valves & Rupture Discs

⚠

API, ASME & EN ISO Compliance

All pressure relief valves and rupture discs supplied to API 520 Part I/II, API 521, ASME Section VIII UG-125/UG-126/UG-127/UG-132, and EN ISO 4126 Parts 1–7. SASO certified for Saudi Arabia market requirements. ASME UV-stamp and PED CE marking documentation available.

📄

Full Documentation for EPC & Aramco Projects

EN 10204 3.1 material test certificates, burst pressure test certificates traceable to primary standards, ASME manufacturer data reports, ITP documentation, SIL certificates and FMEDA reports for SIS applications — full MDR packages for Saudi Aramco, SABIC, and EPC contractor projects.

🔥

Sour Service & NACE MR0175 Capability

SS 316/316L body, Inconel 718 springs, PTFE and PEEK seat rings, and hardness-controlled carbon steel body options for H2S sour gas service to NACE MR0175 / ISO 15156 — critical for Saudi Arabia upstream and midstream oil & gas facilities handling sour crudes and gas streams.

🗺

In-Kingdom Stock & Nationwide Delivery

Key PRV, rupture disc, and holder sizes stocked in Jeddah for immediate dispatch across all 18 Saudi regions — Jubail Industrial City, Yanbu, Dammam, Riyadh, Jizan, and Tabuk. ISO 9001:2015 certified (CR 4030570569). PRV repair and recertification service also available in-kingdom.

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Spectacle blinds, paddle blinds, and spade blanks in SS 316L and carbon steel — ASME B16.48, API 590, all pressure classes — for positive isolation in Saudi Arabia process plants.
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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.
Frequently Asked Questions

Pressure Relief Valves & Rupture Discs in Saudi Arabia — Common Questions

What standards do your pressure relief valves meet for Saudi Aramco and SABIC projects?

Gulf Union Ozone supplies pressure relief valves and rupture discs that comply with API 520 Part I (sizing and selection) and Part II (installation), API 521 (pressure-relieving and depressurising systems), ASME Section VIII UG-125 and UG-126 (mandatory use and certification of pressure relief devices), and EN ISO 4126 Parts 1 through 7 (safety devices for protection against excessive pressure). For Saudi Arabia market supply, all devices are SASO certified where required. For Saudi Aramco and SABIC engineering specifications, we can supply fully documented PRV and rupture disc packages including ASME UV-stamp certification, EN 10204 3.1 material test certificates for all wetted parts, ITP and MDR documentation, and SIL 2 or SIL 3 rated pilot-operated safety relief valve (POSRV) assemblies for safety instrumented system (SIS) applications. Contact us with your data sheet, line designation table, or project specification for a matched quotation.

Can you supply rupture discs and combined rupture disc and PRV assemblies for oil & gas service in Saudi Arabia?

Yes. Gulf Union Ozone stocks and supplies a complete range of rupture discs for oil and gas, petrochemical, and process industry in Saudi Arabia. Our range includes flat graphite rupture discs for low-pressure gas and vapour service, forward-acting scored stainless steel discs (SS 316/316L) for liquid and gas service, reverse-acting stainless steel discs for back-pressure resistance and low-pressure differentials, Inconel 718 rupture discs for high-temperature and corrosive service up to 815°C, and composite graphite-SS laminated discs for chemical compatibility. Bursting disc holders — single-section, full-bore bolted, and sanitary tri-clamp types — are supplied to match standard ASME and EN flange patterns. Combined rupture disc plus PRV two-device assemblies to API 520 Part I Section 3.14 are also available for applications where dual overpressure protection is required or where PRV reseating in dirty service is a concern. All devices supplied with burst pressure certificates traceable to primary standards. WhatsApp 966550988062 for urgent requirements.

Do you offer SIL-rated pressure relief valves for safety instrumented systems in Saudi Arabia?

Yes. Gulf Union Ozone supplies SIL 2 and SIL 3 rated pilot-operated safety relief valve (POSRV) assemblies specifically designed for use as final elements in safety instrumented systems (SIS) in accordance with IEC 61508 and IEC 61511. SIL-rated POSRVs feature proof-test-friendly designs with full online testability, documented PFDavg and PFH values from IEC 61508 compliant failure mode and effects analysis, and FMEDA reports available for HAZOP and SIL verification studies. Materials include SS 316L wetted bodies, Inconel 718 springs, and PTFE or PEEK seat rings suitable for hydrogen sulphide (H2S) service common in Saudi Arabia sour gas fields. Electrical position indicators and solenoid pilot options are available for integration into DCS and SIS logic solvers. Full documentation including SIL certificate, FMEDA, and loop diagram support can be provided for Saudi Aramco, SABIC, and Ma'aden engineering projects.

Get a Quote

Request a Pressure Relief Valves & Rupture Discs Quotation

To get a fast quotation, provide: device type (spring-loaded PRV / POSRV / back-pressure regulator / rupture disc / combined assembly), fluid service (gas/vapour/liquid/two-phase), set pressure (barg), inlet/outlet size and flange class (ASME or EN), operating temperature range, fluid composition (including H2S content for sour service), required standard (API/ASME/EN ISO), SIL requirement (if applicable), and delivery location in Saudi Arabia.

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Recent Deliveries

  • • ASME UV-stamp spring-loaded PRVs (API 526 orifice G, Class 300, SS 316L trim) for a Jubail refinery turnaround, 2025
  • • Pilot-operated safety valves (POSRV, SIL 2 rated, FMEDA certified) for fired heater outlets at a Saudi Aramco facility, 2025
  • • Rupture discs (SS 316L, 50 bar burst) combined with PRVs for HF acid service at a Yanbu petrochemical unit, 2025

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

Technical content reviewed by Gulf Union Ozone’s Engineering Team, Jeddah — 2026

Inventory updated: August 2026

In Summary

Gulf Union Ozone pressure relief valve supply covers the full Saudi industrial base: ASME Section VIII certified spring-loaded safety relief valves in API 526 standard orifice sizes from Jeddah warehouse stock for immediate MRO supply; Jubail and Dammam 48–72 hours; Riyadh 72–96 hours. Pilot-operated relief valves for high back-pressure and low-set-pressure applications at SABIC and Saudi Aramco process units are sourced with 4–8 weeks lead time from approved API 526 manufacturers. All pressure relief valves for Saudi Aramco service are supplied with: ASME Section VIII 'V' stamp certification; capacity certification (ASME UD stamp or equivalent); factory set-pressure test certificate at the specified set pressure; and EN 10204 3.1 material test certificate for body castings and spring material. Valve tagging, nameplate engraving, and ASME Code documentation package preparation are provided for Saudi Aramco plant instrumentation and safety register submission.

In Summary

Saudi Aramco relief valve systems must comply with SAEP-88 (Pressure Relief and Depressuring System Design) and SAES-J-900 (Relief Valves) — which govern relief valve sizing per API STD 520 Part I and II, set pressure selection, back-pressure calculation, and reaction force analysis. Gulf Union Ozone supplies pilot-operated relief valves for installations with back-pressure above 10% of set pressure (conventional spring-loaded valves lose lift at high back-pressure), balanced-bellows relief valves for variable back-pressure systems, and tank vents (conservation vents) to API 2000 for atmospheric storage tanks at Saudi Aramco crude oil terminals. Rupture disc assemblies upstream of relief valves — to prevent liquid accumulation and valve stick — are supplied in stainless steel and Hastelloy for SABIC and Aramco corrosive service. All relief valve assemblies are tagged, nameplate-engraved, and documented per Saudi Aramco plant PRESSURE SAFETY VALVE (PSV) register requirements with set-pressure test certificate and ASME 'V' stamp.