Testing Suits
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Pressure Testing Chemical Suits

1. Lay the suit to be tested face down on a table free of obstacles.
2. Flatten suit to remove folds and wrinkles.
3. Standard encapsulated suits have two exhaust valves. NFPA suits will have three.
4. Normally Lakeland suits will have a protective shield over the exhaust valves. For instructional purposes the protective shields on this suit have been removed.
5. Snap the exhaust valve caps off the exhaust valves.
6. Remove the rubber diaphragms from the exhaust valves.


7. From the inside of the suit, gently stretch the tail of the exhaust valve while simultaneously pulling the diaphragm out of the valve from the front.
8. The test kit includes everything needed to complete the pressure test.
NFPA kits have an additional twist lock adapter.
9. Remove the twist lock with the male adapter from the test kit.
10. Mix one teaspoon of dishwashing detergent with one cup water.
11. IMPORTANT! Always moisten the rubber washer on the twist lock adapter with water before inserting into the exhaust valve.
12. To avoid damaging the faceshield and the suit material, place one hand under the exhaust valve on the head of the suit while inserting the twist lock adapter with the male fitting into the valve. Turn clockwise to lock in place.
13. From the rear side of the exhaust valve, located inside of the suit, check to see that the twist lock adapter is locked firmly in place.
14. Remove the twist lock with the female adapter from the kit.
15. IMPORTANT! Moisten the rubber washer on the twist lock adapter with water before inserting it into the exhaust valve.
16. Insert the twist lock adapter into the lower exhaust valve, twisting clockwise to lock it in place. To avoid damaging the faceshield and the suit material, place one hand under the exhaust valve on the head of the suit while inserting the twist lock adapter.
17. Check to be certain the adapter is locked in place.
18. If you have an NFPA chemical suit, you will have to repeat the process a third time with the dummy plug twist lock adapter. Insert this adapter into the third exhaust valve.
19. Begin to close the zipper.
20. As you get to the end of the zipper at the top of the head, notice the plastic tab in the zipper area (shown here by pencil point).
21. To completely close the zipper, pull the zipper past this plastic tab. If the zipper is not completely closed, air will escape and the suit will fail the pressure test.
22. Place the test gauge on a level surface and in an upright position. Check the dial to make sure the needle is exactly on zero.
23. If the needle does not read zero, adjust it to read zero by turning the screw as shown here.

24. Remove the tubing loops from the test kit. There should be two tubes of different lengths; a short hose with female quick disconnect fittings, and a long hose with male nipples on each end.

25. Connect the long hose with the male nipple to the twist lock adapter with the female fitting.
26. Take the other end of the long hose and insert the male nipple into the female quick disconnect on the test gauge.
27. Connect the short hose with the female quick disconnect to the twist lock adapter with the male fitting. This is the fitting located at the head of the suit.
28. Take the other end of the short tube coming from the exhaust valve at the head of the suit , and connect it to the brass tee that has the test kit I.D. and serial number on it.
29. Turn the air flow control valve to the off position (crossways).
30. Connect an outside air source to the brass male disconnect on the air flow control valve . The most popular male fitting is supplied. If this fitting is incompatible, it may be changed to one that is compatible with the air source.
31. CAUTION! Inflate the suit by slowly opening the air flow valve control handle. A regulated air supply of 125 psi or less is required.
32. Pressurize the suit to 5 inches of water column for one minute.

Never inflate the suit to over 5 inches of water column! It will damage the suit and the test kit.

33. Work out any big wrinkles in the suit that might interfere with the test.
34. Remove the countdown alarm timer from the test kit lid. If using the timer for the first time, pull the battery protection tab from the back of the timer. If your test kit has been used before and stored properly, remove the battery compartment cover, flip the battery over, and replace the cover. Set the timer to exactly four minutes.

NOTE: To prolong the life of the battery, as well as for storage purposes, flip the battery over after accurate completion of the test.

35. Reduce the air pressure in the suit to four inches of water column by depressing the relief valve button located on the brass tee.
36. Begin the test. Do not move or touch the suit during the timed test as this will affect the water column pressure, and will result in inaccurate readings.
37. Record the suit pressure at the end of four minutes. If the suit pressure is 3.2 inches of water column or better, the suit has passed the test. If the suit fails the test, remove it from service immediately.
38. Release the air pressure in the suit by completely unzipping the zipper .
39. Disconnect all hoses and store them back in the test kit.
40. Remove the twist lock adapters from the exhaust valves.
41. Reinstall the rubber diaphragms back into the exhaust valves. First, pinch the rubber diaphragm sides against each other.
42. Push the tail of the diaphragm into the exhaust valve. Pull slightly and the rubber diaphragm should pop into place.
43. CAUTION! Make sure the diaphragm lays flat.
44. Snap the exhaust valve covers back into place.
45. Fold the suit up and return it to the storage bag. Begin by folding the feet into the legs.
46. Fold over the opening and flatten the suit.
47. In order for the suit to fit properly in the storage bag, both legs must be folded as shown.
48. Fold the arms, accordion style, onto the back of the suit.
49. Ensure that the arms are compactly folded up.
50. In order for the suit to fit properly in the storage bag, both legs must be folded as shown.
51. Fold the suit, starting at the bottom and working toward the top.
52. Continue to fold the suit all the way to the top.
53. Be careful not to crease the hood face shield.
54. Place the suit back into the storage bag.
55. For longer battery life, open up the battery door on the timer and flip the battery over.

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