1 Scope

1.1 These requirements cover hand-operated pumps intended to handle flammable and combustible liquids.

1.2 These pumps are intended to be attached to a threaded flange in the head or side of a barrel, drum, or other similar container.

1.3 "Flammable and combustible liquids" as used herein refers to the fuels shown in (a) - (g) and the vapors of these fuels:

a)    Gasoline;

b)    Gasoline/ethanol blends up to 15 percent ethanol;

c)    Gasoline/methanol blends up to 15 percent methanol;

d)    Diesel fuel;

e)    Fuel oil;

f)    Lubricating oil; and

g)    Kerosene.

1.4 These pumps are evaluated in accordance with the applicable installation and operational requirements in the Flammable and Combustible Liquids Code, NFPA 30.

1.5 This outline does not cover hand-operated pumps for liquids other than shown in 1.3.

5 Materials

5.1 A metal part to be used for bodies or closures shall be iron, steel, brass, aluminum, or other similar material, inherently resistant to the action of the liquid to be handled. Other parts in contact with the liquid to be handled shall be resistant to the action of such liquid when malfunction of the part results in:

a)    Leakage;

b)    Malfunction of equipment attached to the pump; or

c)    A risk of injury to persons.

5.2 An elastomeric part used in contact with liquid or vapor shall have the properties of Volume Change and Extraction as specified in the requirements in the Standard for Gaskets and Seals, UL 157, for end-use applications of the applicable fuels shown in 1.3.Polytetrafluoroethylene (PTFE) is considered to comply with the requirements of this paragraph.When an elastomeric part does not comply with the requirements described in 5.2, the pump assembly shall be evaluated in accordance with the Immersion Test, Section 21.

5.3 The Standard for Gaskets and Seals, UL 157, provides for the testing of either finished elastomeric parts or sheet or slab material. Sheet or slab material is to be tested when the elastomeric parts are O-rings having a diameter of less than 25 mm (1 in). The material tested is to be the same as that used in the product, regardless of whether finished elastomeric parts, or sheet or slab material is tested.

5.4 A plastic part of a pump that comes in contact with fluid or vapor, and whose malfunction results in the hazards specified in 5.1, shall comply with the Dimensional Stability Test, Section 22.

5.5 Sand castings used in the construction of liquid confining parts, failure of which will allow external leakage, shall be free from porosity leakage and shall have a design thickness of not less than that specified in Table 5.1.Table 5.1Minimum thickness of liquid-confining sand castings

	Minimum wall thickness,
Material	inch	(mm)
Cast iron	3/16	4.8
Malleable iron, ductile iron, or cast steel	1/8	3.2
Brass or bronze	3/32	2.4
Aluminum	5/32	4.0

5.6 A liquid confining part made of drawn brass or machined from brass rod, and consisting of 15 percent or more zinc content, shall withstand, without cracking, the 10-Day Moist Ammonia-Air Stress Cracking Test, Section 23.

5.7 All metal parts that come in contact with the liquid to be handled shall be hot-dip galvanized or otherwise coated in an acceptable manner to retard corrosion if not made of brass or other corrosion resistant material. Surfaces subject to injury in storage, handling, or assembly shall be hot-dip galvanized. Where outer walls of ferrous castings are not less than 1/4 inch in thickness and have been proven by test to be free from leaks and porosity, the surfaces are not required to be coated.