VALVE; MODIFIER: SELF-RELIEVING; MANUFACTURER’S NAME: MARTIN ENGINEERING; PART NUMBER: 21680; EQUIPMENT OF WHICH PART: NO, PART NUMBER: 21680; EQUIPMENT PART OF: NO INFORMATION; EQUIPMENT MANUFACTURER: NO INFORMATION; EQUIPMENT MODEL: NO INFORMATION; EQUIPMENT SERIAL NUMBER: NO INFORMATION; ADDITIONAL FEATURES: MODEL HURRICANE 1 2”’;, EQUIPMENT SERIAL NUMBER: NO INFORMATION; ADDITIONAL FEATURES: MODEL HURRICANE 1 2”; EQUIPMENT SERIAL NUMBER: NO INFORMATION; ADDITIONAL FEATURES: MODEL HURRICANE 1 2”; EQUIPMENT SERIAL NUMBER: NO INFORMATION; ADDITIONAL FEATURES: MODEL HURRICANE 1 2”.