Valve Comparison Guide
API 600 Gate Valve vs API 6D Gate Valve - Process vs Pipeline
API 600 and API 6D both cover steel gate valves - but for completely different services. API 600 = process plant; API 6D = pipeline. Compare bi-directional seating, fire safety, pigging, and design.
[object Object] vs [object Object]: which should you choose?
Specify API 6D slab gate valves for all pipeline service (transmission, gathering, trunk line) where pigging, bi-directional seating, and fire safety are required. Specify API 600 wedge gate valves for refinery and petrochemical process plant service where high-temperature, large-bore general process isolation is required.
Overview
API 600 gate valves are designed for general process service in refineries and petrochemical plants - DN50 and larger, Class 150–2500, with bolted or pressure-seal bonnets, OS&Y stem.
DN50–DN600, Class 150–2500, API 600, OS&Y, bolted or PS bonnet, Stellite trim optional
API 6D through-conduit slab gate valves are designed for crude oil and gas pipeline service - full-bore (piggable), bi-directional seating, fire-safe, with sealant injection for emergency seat sealing.
DN50–DN1200, Class 150–2500 (Class 900+ common in trunklines), API 6D, fire-safe API 6FA, sealant injection
API 600 Gate Valve (Process) or API 6D Slab Gate Valve (Pipeline)?
Tell us your service conditions and we'll recommend the right choice, with a 24-hour quote.
Pros & Cons
API 600 Gate Valve (Process)
API 6D Slab Gate Valve (Pipeline)
API 600 Gate Valve (Process) vs API 6D Slab Gate Valve (Pipeline) - Specification Comparison
| Parameter | API 600 Gate Valve (Process) | API 6D Slab Gate Valve (Pipeline) |
|---|---|---|
| Primary Standard | API 600 + API 598 (testing) | API 6D + API 598 + API 6FA |
| Application | Process plant - refinery, petrochemical | Pipeline - trunkline, gathering, transmission |
| Full Bore (Piggable) | Not required (reduced bore acceptable) | Required - full-bore design per API 6D |
| Bi-Directional Seating | Not required - uni-directional standard | Required - bi-directional per API 6D Section 9.4 |
| Fire Safe | Not required by API 600 | Required - API 6FA certification |
| Sealant Injection | Not standard | Standard - emergency sealant fitting in body |
| Anti-Static Device | Not required | Required - conductive path ball/seat to body |
When to Use Each
Use API 600 Gate Valve (Process) when:
Use API 6D Slab Gate Valve (Pipeline) when:
Decision Guide
Specify API 6D slab gate valves for all pipeline service (transmission, gathering, trunk line) where pigging, bi-directional seating, and fire safety are required. Specify API 600 wedge gate valves for refinery and petrochemical process plant service where high-temperature, large-bore general process isolation is required. Never substitute API 600 for API 6D on a pipeline without engineering review - the missing bi-directional seating and fire-safe features are safety-critical.
Frequently Asked Questions
Can I use an API 6D through-conduit gate valve in a refinery?
[object Object] vs [object Object] — Procurement & Documentation
Documentation Available
- -EN 10204 3.1 Material Test Certificates (heat traceable)
- -API 598 hydrostatic shell & seat test reports
- -Dimensional inspection reports
- -Full Manufacturing Data Record (MDR) / data book on request
Inspection Options
- -In-house QC inspection on every order
- -Third-party inspection (SGS / Bureau Veritas / TÜV / DNV) coordination
- -Witness and hold points accommodated on request
Order Quantities
Flexible — from single critical-spare valves to full project lots.
Export
Worldwide export with complete documentation (COO, EUR.1, packing lists) to 20+ countries.
Custom Engineering
Built to your specification — materials, trim, pressure class and special service (NACE, fire-safe, IBR, cryogenic).
Delivery Support
Dispatch from Vadodara, Gujarat with documented lead times and priority handling for urgent requirements.
Connected Engineering
Still deciding — or ready for a quote?
Tell us your service conditions and we'll recommend API 600 Gate Valve (Process) vs API 6D Slab Gate Valve (Pipeline) for your application, with a 24-hour quote.
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Need to Order API 600 Gate Valve (Process)s or API 6D Slab Gate Valve (Pipeline)s?
Share your valve specifications - bore, pressure class, material, standard - and we'll respond with pricing and availability within 24 hours.