Question

reference
information sheet iii-a-2(15) \oxyfuel gas equipment and supplies\
directions
on the line provided, write the letter which represents the best choice from the right hand column to match the items on the left hand column.

1. reduce high cylinder pressures a. multi - flame heating nozzle
2. controls the delivery pressure of the gas to the hose b. reverse flow check valves
3. calibrated from 0 to 3000 psi c. tip cleaners
4. red neoprene or rubber hose d. flashback arrestor
5. left - hand thread connection e. \v\ notched connector
6. green neoprene or rubber hose f. welding lens
7. calibrated from 0 to 50 psi g. acetylene connector
8. right - hand thread connection h. oxygen high pressure gauge
9. reduce possibility of backfire i. cutting attachment head
10. remove metal splatter from tip j. acetylene hose
11. reduce possibility of explosion in the regulator or cylinder k. regulators
12. protect against infra - red rays l. oxygen hose
13. utilizes numerous flames m. acetylene low pressure gauge
14. allow for separation of mixed pre - heat gases and cutting oxygen n. oxygen connector
15. acetylene connector o. pressure adjusting screw

Explanation:

To solve this matching problem, we analyze each item based on the function or characteristic of oxyfuel gas equipment:

1. Reduce high cylinder pressures

Regulators (K) are used to reduce high cylinder pressures to a usable level for the hose.
Match: K

2. Controls the delivery pressure of the gas to the hose

Pressure Adjusting Screw (O) is used to control the delivery pressure of gas to the hose.
Match: O

3. Calibrated from 0 to 3000 psi

Oxygen High Pressure Gauge (H) measures high pressure (typically up to 3000 psi for oxygen cylinders).
Match: H

4. Red neoprene or rubber hose

Acetylene Hose (J) is typically red.
Match: J

5. Left - hand thread connection

Acetylene Connector (G) uses a left - hand thread (a safety feature for acetylene).
Match: G

6. Green neoprene or rubber hose

Oxygen Hose (L) is typically green.
Match: L

7. Calibrated from 0 to 50 psi

Acetylene Low Pressure Gauge (M) measures lower pressure (up to 50 psi for acetylene delivery).
Match: M

8. Right - hand thread connection

Oxygen Connector (N) uses a right - hand thread.
Match: N

9. Reduce possibility of backfire

Flashback Arrestor (D) is designed to reduce the possibility of backfire.
Match: D

10. Remove metal splatter from tip

Tip Cleaners (C) are used to remove metal splatter from the tip.
Match: C

11. Reduce possibility of explosion in the regulator or cylinder

Reverse Flow Check Valves (B) help prevent reverse flow, reducing explosion risk.
Match: B

12. Protect against infra - red rays

Welding Lens (F) protects against infrared rays during welding.
Match: F

13. Utilizes numerous flames

Multi - flame Heating Nozzle (A) uses multiple flames for heating.
Match: A

14. Allow for separation of mixed pre - heat gases and cutting oxygen

Cutting Attachment Head (I) separates pre - heat gases and cutting oxygen.
Match: I

15. Acetylene connector (Note: Likely a typo, but based on left - hand thread and acetylene, it’s G. But if re - checking, Acetylene Connector (G) is for acetylene. However, if the question is about the “V” notched connector for acetylene? Wait, no—“V” notched connector (E) is for acetylene? Wait, no, earlier 5 is G (Acetylene Connector, left - hand thread). Wait, maybe a typo, but assuming the question is about the connector for acetylene, it’s G. But if the option E is “V” notched connector (for acetylene), but no—let’s re - check. Wait, the 15th item: “Acetylene connector” – the Acetylene Connector is G (left - hand thread). But maybe the intended is E? No, E is “V” notched connector (used in some setups, but typically Acetylene Connector is G. However, maybe a mistake, but based on the options, G is Acetylene Connector. Wait, but let's confirm:

Wait, the 5th item is “Left - hand thread connection” matched to G (Acetylene Connector). So 15th: “Acetylene connector” – still G. But maybe the option E is “V” notched connector (for acetylene hose connection? No, E is “V” notched connector, maybe for tip? No, tip cleaners are C. Wait, perhaps a typo, but based on the options, G is Acetylene Connector. So:

Match: G (but if the question meant “V” notched connector, it would be E, but the description is “Acetylene connector”, so G is correct as it’s the acetylene connector with left - hand thread.)

Final Answers:

1. K
2. O
3. H
4. J
5. G
6. L
7. M
8. N
9. D
10. C
11. B
12. F
13. A
14. I
15. G

Answer:

To solve this matching problem, we analyze each item based on the function or characteristic of oxyfuel gas equipment:

1. Reduce high cylinder pressures

Regulators (K) are used to reduce high cylinder pressures to a usable level for the hose.
Match: K

2. Controls the delivery pressure of the gas to the hose

Pressure Adjusting Screw (O) is used to control the delivery pressure of gas to the hose.
Match: O

3. Calibrated from 0 to 3000 psi

Oxygen High Pressure Gauge (H) measures high pressure (typically up to 3000 psi for oxygen cylinders).
Match: H

4. Red neoprene or rubber hose

Acetylene Hose (J) is typically red.
Match: J

5. Left - hand thread connection

Acetylene Connector (G) uses a left - hand thread (a safety feature for acetylene).
Match: G

6. Green neoprene or rubber hose

Oxygen Hose (L) is typically green.
Match: L

7. Calibrated from 0 to 50 psi

Acetylene Low Pressure Gauge (M) measures lower pressure (up to 50 psi for acetylene delivery).
Match: M

8. Right - hand thread connection

Oxygen Connector (N) uses a right - hand thread.
Match: N

9. Reduce possibility of backfire

Flashback Arrestor (D) is designed to reduce the possibility of backfire.
Match: D

10. Remove metal splatter from tip

Tip Cleaners (C) are used to remove metal splatter from the tip.
Match: C

11. Reduce possibility of explosion in the regulator or cylinder

Reverse Flow Check Valves (B) help prevent reverse flow, reducing explosion risk.
Match: B

12. Protect against infra - red rays

Welding Lens (F) protects against infrared rays during welding.
Match: F

13. Utilizes numerous flames

Multi - flame Heating Nozzle (A) uses multiple flames for heating.
Match: A

14. Allow for separation of mixed pre - heat gases and cutting oxygen

Cutting Attachment Head (I) separates pre - heat gases and cutting oxygen.
Match: I

15. Acetylene connector (Note: Likely a typo, but based on left - hand thread and acetylene, it’s G. But if re - checking, Acetylene Connector (G) is for acetylene. However, if the question is about the “V” notched connector for acetylene? Wait, no—“V” notched connector (E) is for acetylene? Wait, no, earlier 5 is G (Acetylene Connector, left - hand thread). Wait, maybe a typo, but assuming the question is about the connector for acetylene, it’s G. But if the option E is “V” notched connector (for acetylene), but no—let’s re - check. Wait, the 15th item: “Acetylene connector” – the Acetylene Connector is G (left - hand thread). But maybe the intended is E? No, E is “V” notched connector (used in some setups, but typically Acetylene Connector is G. However, maybe a mistake, but based on the options, G is Acetylene Connector. Wait, but let's confirm:

Wait, the 5th item is “Left - hand thread connection” matched to G (Acetylene Connector). So 15th: “Acetylene connector” – still G. But maybe the option E is “V” notched connector (for acetylene hose connection? No, E is “V” notched connector, maybe for tip? No, tip cleaners are C. Wait, perhaps a typo, but based on the options, G is Acetylene Connector. So:

Match: G (but if the question meant “V” notched connector, it would be E, but the description is “Acetylene connector”, so G is correct as it’s the acetylene connector with left - hand thread.)

Final Answers:

1. K
2. O
3. H
4. J
5. G
6. L
7. M
8. N
9. D
10. C
11. B
12. F
13. A
14. I
15. G