| 421AK00593B | NO CONTROL SPECIAL FEATURES | Second Design | 62.3 cm3/r [3.80 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 275.8-282.7 bar [4000-4100 lbf/in2] |
| 421AK00587C | NO CONTROL SPECIAL FEATURES | THIRD DESIGN | 49.2 cm3/r [3.00 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 206.8-213.7 bar [3000-3100 lbf/in2] |
| 421AK00586C | NO CONTROL SPECIAL FEATURES | THIRD DESIGN | 49.2 cm3/r [3.00 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 206.8-213.7 bar [3000-3100 lbf/in2] |
| 421AK00583C | NO CONTROL SPECIAL FEATURES | THIRD DESIGN | 49.2 cm3/r [3.00 in3/r] | 1.0625-12 UNF-2B O-RING PORT - BOTTOM | 206.8-213.7 bar [3000-3100 lbf/in2] |
| 421AK00579C | NO CONTROL SPECIAL FEATURES | THIRD DESIGN | 49.2 cm3/r [3.00 in3/r] | 1.0625-12 UNF-2B O-RING PORT - BOTTOM | 206.8-213.7 bar [3000-3100 lbf/in2] |
| 421AK00562C | BLEED DOWN ORIFICE | THIRD DESIGN | 41.0 cm3/r [2.50 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00561C | BLEED DOWN ORIFICE | THIRD DESIGN | 41.0 cm3/r [2.50 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00557C | BLEED DOWN ORIFICE | THIRD DESIGN | 62.3 cm3/r [3.80 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00556C | BLEED DOWN ORIFICE | THIRD DESIGN | 62.3 cm3/r [3.80 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00553C | BLEED DOWN ORIFICE | THIRD DESIGN | 62.3 cm3/r [3.80 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00552B | BLEED DOWN ORIFICE | Second Design | 62.3 cm3/r [3.80 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00542C | NO CONTROL SPECIAL FEATURES | THIRD DESIGN | 80.0 cm3/r [4.88 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00542B | NO CONTROL SPECIAL FEATURES | Second Design | 80.0 cm3/r [4.88 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |
| 421AK00541C | BLEED DOWN ORIFICE | THIRD DESIGN | 80.0 cm3/r [4.88 in3/r] | 1.0625-12 UNF-2B O-RING PORT - TOP | 199.9-206.8 bar [2900-3000 lbf/in2] |