Why RTJ instead of RF at Class 1500?
RTJ flanges use a metal ring gasket for high-pressure sealing. Many Class 900/1500 oil and gas specs require RTJ.
RFQ-intent page · From live buyer enquiry language · Updated October 2026
Who manufactures API 6D 4 inch Class 1500 RTJ full bore ball valves in India?
Supreme Valves India quotes API 6D-style trunnion / high-pressure ball valves for 4 inch Class 1500 RFQs with RTJ flanged ends and full bore when specified. Body material (WCB, LF2, SS), fire-safe, and double block & bleed options are confirmed on the datasheet before firm offer.
Typical RFQ specification
- Standard reference: API 6D / ASME B16.34 Class 1500
- Size focus from RFQs: 4 inch (DN100)
- Ends: RTJ flanged (Ring Type Joint)
- Bore: full bore when specified
- Options: fire-safe, gear operated, DBB
Buyer FAQ
Floating or trunnion at 4 inch 1500?
Trunnion-mounted designs are typical at this size/class. Confirmed on engineering review.
Test requirements?
Hydro shell and seat tests per API 6D / project ITP; NDE when specified.
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