| A |
INLET & OUTLET COMBINATION |
| (See Selection Table) |
| B |
API ORIFICE LETTER |
| C |
INLET BASE & BODY MATERIAL |
| 5 – CARBON STEEL / WCB CARBON STEEL |
| 6 – 316 STAINLESS STEEL / WCB CARBON STEEL |
| 7 – 316 STAINLESS STEEL / CF3M STAINLESS STEEL |
| D |
CAP TYPE |
| 1 – CLOSED CAP |
| 2 – OPEN LIFT LEVER |
| 3 – CLOSED LIFT LEVER |
| 4 – CLOSED CAP W/STAINLESS STEEL BONNET (H-K ORIFICE) |
| 5 – OPEN LIFT LEVER W/STAINLESS STEEL BONNET (H-K ORIFICE) |
| 6 – CLOSED LIFT LEVER W/STAINLESS STEEL BONNET (H-K ORIFICE) |
| E |
SEAT MATERIAL |
| V – VITON 90 DUROMETER |
| T – 15% GLASSED FILLED TEFLON |
| P – VIRGIN PEEK |
| F |
SPRING CODE |
| (ASSIGNED BY MERCER) |
| G |
TRIM CODES |
| U – 316 S.S. DISK & NOZZLE (STD GAS SERVICE F,G,H,J,&K ORIFICES)* |
| I – 17-4 S.S DISK & NOZZLE (STD GAS SERVICE D&E ORIFICES) |
| C – 440C S.S. DISK, 17-4 S.S. NOZZLE (STD GAS SERVICE C ORIFICE AND HIGH PRESSURE GAS SERVICE FOR F,G,&H ORIFICES)* |
| L – LIQUID SERVICE 316 S.S. DISK & NOZZLE |
| N – SOUR GAS SERVICE 316 S.S. DISK & NOZZLE |
| B – SOUR LIQUID SERVICE 316 S.S. DISK & NOZZLE |
| * U TRIM CODE CHANGES TO C TRIM CODE AT F > 1399PSI , G > 1199PSI , H > 1049PSI |
| H |
O-RING MATERIAL |
| 1 – STANDARD O-RINGS (VITON & BUNA-N) |
| I |
2- DIGIT “SPECIAL” CODE |
| (IF APPLICABLE ASSIGNED BY MERCER) |