What is the difference between gate and globe valve?

Gate valves use a flat wedge that moves perpendicular to flow for on-off service with minimal pressure drop when fully open. Globe valves use a plug that seats against a horizontal weir for throttling and precise flow control. Gate valves should not be used for throttling; globe valves should not be used where full flow with minimal pressure drop is required. For Saudi Arabian pipeline isolation, gate valves are standard. For modulating control in process lines, globe valves or control valves are used. Gate valves are cheaper and lighter for the same pressure class and size.

How to select valve based on application (on/off vs throttling)?

On-off (isolation) service: Use gate valve for full bore flow and minimal pressure drop, ball valve for quick quarter-turn operation, butterfly valve for large sizes (above 24 inch) where gate/ball cost is prohibitive. Throttling service: Use globe valve for precise flow control, control valve with positioner for automated modulation. Consider: (1) Required control range (gate/ball limited to 10:1, globe 50:1, control valve 100:1), (2) Pressure drop availability (throttling requires 10-20% system pressure loss), (3) Operating frequency (frequent cycling wears soft seats). For Saudi Arabian oil terminal pump discharge, on-off gate or ball valves are used; for chemical injection, globe needle valves provide fine control.

What is the difference between BS, ANSI, and DIN valve standards?

BS (British Standards) and ANSI/ASME (American) are the dominant global valve standards. Key differences: Face-to-face dimensions: BS vs ANSI differ for some sizes, causing compatibility issues. Pressure ratings: Both use Class system (150, 300, 600) but BS also has PN (Pressure Number) ratings not directly interchangeable. Flange dimensions: ANSI B16.5 vs BS 4504 have different bolt circles and flange OD for same rating. Gate, globe, check valves: BS 5153 (cast iron), BS 5154 (bronze), BS 1873 (steel) vs ANSI B16.34. For Saudi Arabian projects, ANSI/API standards dominate (Aramco, ADNOC preference). For European-engineered plants (Jubail / Yanbu), BS may be specified. Always verify compatibility before ordering.

How to read a valve material specification (WCB, CF8M, etc.)?

Valve body materials use casting designations: WCB (ASTM A216 Carbon Steel, max temp 425°C), WC6 (1.25Cr-0.5Mo, to 540°C), WC9 (2.25Cr-1Mo, to 570°C), C5 (5Cr-0.5Mo). Stainless steel: CF8 (304 SS), CF8M (316 SS), CF3 (304L), CF3M (316L), CN7M (Alloy 20). Forging designations: A105 (carbon steel), F22 (2.25Cr-1Mo), F91 (9Cr-1Mo-V). Trim materials use AISI designations: 304, 316, 410 (13Chrome), 440C (for seats). Example: Gate valve with WCB body and 316 trim means carbon steel body with stainless steel disc and stem. For Saudi Arabian sour service, verify H2S content and select NACE-compliant materials per MR0175.

IBR vs non-IBR valve certification - which for Indian projects?

IBR (Indian Boiler Regulations) certification is mandatory for valves used in Indian boiler and pressure vessel applications per the Indian Factories Act. IBR valves must be: (1) stamped with IBR mark (green square), (2) supplied with IBR test certificate from manufacturer with IBR license, (3) traceable to raw material heat numbers approved by IBR authorities. Non-IBR valves are used for all other applications including: water treatment, HVAC, oil and gas pipelines, and export to Middle East. For Saudi Arabian projects, IBR is not recognized - API, ASME, and ISO certifications apply. When exporting to India for power plant or refinery construction, verify whether the end user requires IBR or non-IBR.

What is NACE MR0175 for sour gas service valves?

NACE MR0175 (now ISO 15156) specifies materials resistant to sulfide stress cracking in sour gas service. Requirements: (1) Maximum hardness HRC 22 for pressure-containing parts in aqueous H2S service, (2) Approved material combinations validated for H2S partial pressure and pH ranges, (3) Heat treatment and hardness testing certification, (4) Environmental severity classification (medium vs severe). For Saudi Arabian oil fields with H2S content above 0.05kPa partial pressure, all wetted components must be NACE compliant. Valve trim materials like 316L SS, Inconel 625, and certain duplex stainless steels are approved. Our sour gas valves for Aramco and SADARA projects include full NACE MR0175 documentation.

Export documentation for valves to Middle East (CO, MTC, PI)?

Middle East export documentation required: (1) Commercial Invoice (CI) with HS Code 8481.80.40 for steel valves, (2) Packing List showing quantity, gross/net weight, dimensions, (3) Bill of Lading (B/L) or Air Waybill, (4) Certificate of Origin (CO) from Indian Chamber of Commerce or equivalent, (5) Material Test Certificates (MTC/EN 10204 3.1) with chemical and mechanical properties, (6) Inspection Certificate if third-party inspection required (SGS, Bureau Veritas), (7) For Saudi Arabia: SASO/SABER CoC, (8) For UAE: Commercial invoice with UAE import code. Delivery terms typically origin Mumbai/Cochin or CIF Dammam/Dubai. Production schedule 4-12 weeks depending on complexity.

Home / Products / Pressure Safety Valves

Pressure Safety Valves (PSV)

Name: Pressure Safety Valves (PSV) Exporter
Brand: Supreme Valves India
SKU: SV-PRESSURESAFETYVALVE
Rating: 4.8 (127 reviews)

Our pressure safety valves (PSVs) and pressure relief valves (PRVs) are designed to protect equipment and personnel from overpressure events. They are built to the highest standards for reliability and performance.

request an enquiry

Product Specifications

Design Standard	API 520, API 526
Type	Spring-loaded, Pilot-operated
Material	Carbon Steel, Stainless Steel, Special Alloys
Orifice Sizes	D to T
Set Pressure	As per customer requirement

Materials of Construction

Part	Carbon Steel	Alloy Steel	Stainless Steel
Body	A216 WCB/WCC; A352 LCB/LCC	—	A351 CF8/CF8M
Bonnet	A216 WCB/WCC; A352 LCB/LCC	—	A351 CF8/CF8M
Nozzle	410 SS / 316 SS	—	316 SS
Disc	410 SS hardfaced	—	316 SS hardfaced
Spindle/Stem	410 SS	—	304/316 SS
Spring	Chrome Silicon Steel	Inconel X‑750 (as required)	—
Gasket	Spiral wound SS316/304/321 with graphite filler
Studs	A193 B7	A193 B16	A193 B8
Nuts	A194 2H	A194 7	A194 8

Purchase Options

Add to Cart Request Enquiry WhatsApp Download Datasheet

Materials of Construction (MOC)

Component	Material Specification
Body & Bonnet	Ductile Iron (ASTM A536 / EN-GJS-400-15)
Stem / Spindle	SS 410 / SS 420
Seat / Trim	EPDM / NBR / Bronze

Technical Specifications

Parameter	Specification / Standard
Manufacturing / Design Standard	EN 1171 / AWWA C509 / BS 5163
Testing Standard	API 598 / EN 12266-1
Pressure Rating	PN16 / PN25

Material of Construction

S.N.	Parts Name	Material
01	BODY	ASTM A216 GR WCB
02	BONNET	ASTM A216 GR WCB
03	CAP	ASTM A216 GR WCB
04	NOZZLE	S.S.410 / CA15 / SS316 / CF8M
05	NOZZLE RING	S.S.304
06	DISC	S.S.316 / CF8M
07	ANTIFRICTIONAL BALL	S.S.304
08	DISC HOLDER	S.S.304
09	GUIDE	S.S.304 / CF8
10	REACTION HOOD	S.S.304 / CF8
11	STEM	S.S.304
12	ADJUSTING SCREW	S.S.304
13	ADJUSTING SCREW NUT	S.S.304
14	NOZZLE RING LOCK SCREW	S.S.304
15	SPRING	CR.VA ALLOY SPRING STEEL (EN-47)
16	SPRING WASHER	S.S.304
17	BONNET STUDS / NUTS	ASTM A193, GR-B7 ASTM A194, GR-2H
18	GUIDE GASKET	S.S SPIRAL WOUND WITH C.A.F.
19	SET SCREW GASKET	S.S SPIRAL WOUND WITH C.A.F.
20	LEVER	ASTM A216 GR WCB
21	STEM NUT	STEEL
22	FORK	ASTM A216 GR WCB
23	CAP LOCKING SCREW	STEEL
24	DRAIN PLUG	CARBON STEEL

Dimension Tables

Inch	M.M.	A	B	H	ORIFICE	INLET	OUTLET
1" X 2"	25 X 50	105	127	460	G (Ø23.0mm)	150# OR 300#	150#
1.5" X 3"	40 X 80	130	124	530	J (Ø32.5mm)	150# OR 300#	150#
2" X 3"	50 X 80	133	124	575	H (Ø28.0mm)	150# OR 300#	150#
3" X 4"	80 X 100	155	162	620	K (Ø42.5mm)	150# OR 300#	150#
4" X 6"	100 X 150	181	229	900	P (Ø72.5mm)	150# OR 300#	150#
6" X 8"	150 X 200	240	241	1150	Q (Ø95.5mm)	150# OR 300#	150#

Technical Specifications

Design & Exporting

Standard: BS 5351 / API 6D

Testing & Inspection

Standard: API 598 / BS 5146

Pressure Rating

Class: 150# / 300#

Temperature Rating

Max Temp: 180°C - 300°C

Test Pressure Requirements

Test Type	Pressure	Standard
Hydrostatic Body Test	425 PSI (Class 150)	API 598
Seat Test	300 PSI (Class 150)	API 598
Air Test	80 PSI	API 598

Materials of Construction

Part Name	Material Specification
Body	ASTM A351 Gr. CF8/CF8M/CF3/CF3M, ASTM A216 WCB, Cast Iron
Ball/Disc	AISI 304/316/304L/316L Stainless Steel
Stem	AISI 304/316/304L/316L, AISI 410
Seat/Seal	PTFE, Reinforced PTFE, Graphite
Gaskets	Spiral Wound Metallic, PTFE, Graphite
Bolting	ASTM A193 Gr. B7/B8, Carbon Steel

Size Range & End Connections

Size Range:

1/2" to 12" (15mm to 300mm)

End Connections:

Flanged (ANSI B16.5), Screwed (BSP/NPT), Socket Weld (ANSI B16.11), Tri-Clover

Pressure Classes:

Class 150, 300, 600, 800, 1500, 2500

Face to Face:

As per ANSI B16.10, BS 5351

Technical Notes

All dimensions are in millimeters unless otherwise specified
Tolerance: ±3mm for standard dimensions
Complete material traceability provided with mill certificates
Valves tested as per API 598 and customer specifications
Special materials, coatings, and certifications available on request
Gear operators and actuators available for larger sizes
Fire-safe and anti-static designs available on request

Standards Compliance

API 6D

Pipeline Valves

API 598

Valve Testing

BS 5351

Steel Ball Valves

ANSI B16.34

Valve Design

ISO 9001

Quality Management

IBR

Indian Boiler Regulations

Industries Served

Oil & Gas

Upstream, Midstream & Downstream processing facilities

Petrochemical

Refineries and chemical processing plants

Fire Protection

NFPA-compliant systems for Middle East projects

Water Treatment

Desalination and wastewater facilities

Power Generation

Conventional and renewable energy plants

LNG & Gas

LNG terminals and gas distribution (KSA/Qatar projects)

Why Choose Supreme Valves

Export-Ready Documentation

Complete documentation package for SABER (Saudi Arabia), CITC (Kuwait), and Civil Defence approvals across all GCC countries. Material test certificates (MTC) and mill reports provided with every shipment.

38+ Years of Manufacturing Excellence

Established in 1986, we have supplied valves to major oilfield operators, EPC contractors, and distributors across the Middle East, Southeast Asia, and North America.

International Standards Compliance

API 600, API 6D, ASME B16.34, BS 1873, EN 12516 certified. IBR certification available for boiler applications. FM Global and UL-listed products for fire protection.

Reliable delivery plans

Standard delivery 3-5 weeks for in-stock items. Dedicated export packing with moisture-resistant packaging for sea freight. On-time delivery rate exceeding 97% for international shipments.