---
kind: "range"
citation: "40 C.F.R. §§ 1090.1550–1090.1565"
title: "40"
from: "1090.1550"
to: "1090.1565"
count: 4
url: "https://uscodex.org/cfr/40/1090.1550..1090.1565"
---

# §1090.1550. Requirements for gasoline dispensing nozzles used with motor vehicles.


The following requirements apply for any nozzle installation used for dispensing gasoline into motor vehicles:

- (a) Nozzles must meet the following hardware specifications:
  - (1) The outside diameter of the terminal end must not be greater than 21.3 mm.
  - (2) The terminal end must have a straight section of at least 63 mm.
  - (3) The retaining spring must terminate at least 76 mm from the terminal end.
- (b) The dispensing flow rate must not exceed a maximum value of 10 gallons per minute. The flow rate may be controlled through any means in the pump/dispenser system, as long as it does not exceed the specified maximum value.

# §1090.1555. Requirements for gasoline dispensing nozzles used primarily with marine vessels.


The refueling hardware specifications of this section apply for any nozzle installation used primarily for dispensing gasoline into marine vessels. Note that nozzles meeting these specifications also meet the specifications of [§ 1090.1550(a)](/cfr/40/1090.1550.md?p=a).

- (a) The outside diameter of the terminal end must have a diameter of 20.93 ± 00.43 mm.
- (b) The spout must include an aspirator hole for automatic shutoff positioned with a center that is 17.0 ± 01.3 mm from the terminal end of the spout.
- (c) The terminal end must have a straight section of at least 63.4 mm with no holes or grooves other than the aspirator hole.
- (d) The retaining spring (if applicable) must terminate at least 76 mm from the terminal end.

# §1090.1560. Requirements related to dispensing natural gas.

- (a) Except for pumps dedicated to heavy-duty vehicles, any pump installation used for dispensing natural gas into motor vehicles must have a nozzle and hose configuration that vents no more than 1.2 grams of natural gas during a complete refueling event for a vehicle that meets the requirements of [40 CFR 86.1813-17(f)(1)](/cfr/40/86.1813-17.md?p=f-1).
- (b) Determine the amount of natural gas vented using calculations based on the geometric shape of the nozzle and hose.

# §1090.1565. Requirements related to dispensing liquefied petroleum gas.

- (a) Except for pumps dedicated to heavy-duty vehicles, any pump installation used for dispensing liquefied petroleum gas into motor vehicles must have a nozzle that has no greater than 2.0 cm 3 dead space from which liquefied petroleum gas will be released when the nozzle disconnects from the vehicle.
- (b) Determine the volume of the nozzle cavity using calculations based on the geometric shape of the nozzle, with an assumed flat surface where the nozzle face seals against the vehicle.