AOP Series D2 Trunnion
Mounted Ball Valve

Two-piece, end-entry AOP Series D2 trunnion-mounted ball valves up to ASME Class 600 are available in 2- to 12-in bores.

The special graphite seals effectively prevent external leakage for fire-safe applications, conforming to API Spec 6FA or API Std 607.

Operating temperatures range from −20 to 250 degF
[−29 to 121 degC].

The following features are standard:

• double barrier stem seals
• fixed-position external stops
• stem separate from the ball
• trunnion-mounted ball for ease of operation at high pressures
• NACE MR0175 and ISO 15156 compliance
• fire-testing in accordance with API Spec 6FA or API Std 607.
• metal-backed self-lubricating PTFE sleeve bearings and thrust washers to reduce torque and extend service life
• bolted construction to facilitate job-site repairs
• electroless nickel plated (ENP) valve trim
• fire-safe graphite rings in 2-, 3-, and 4-in valves for protection against external leakage

• self-relieving seats to eliminate cavity pressure lock
• double block and bleed design
• seat injection on 6-in to 12-in valves in ASME Classes 150 through 600
• API Spec 6D monogram
• explosive-decompression-certified FKM seals
• certified low-emissions per API Std 641.