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Master Catalog>>Section C - Meters & Scales>>Page C-1



1 Inch Neptune LP-Gas Meters 

Contains all essential accessories. Available with 600 or 800 series register that includes totalizer and resetable counter. Also available with Automatic Temperature Compensator. 

Part no. 

Description 

Capacity 

Order

RL100-1010S 

1"-4D w/o register 

31/2 -13 GPM 

RL100-1012S 

1"-4D w/600 register, US gallons 

RL100-1123S 

1"-4D w/600 register/ATC, US gallons 

RL100-101VAS 

1”-4D w/Veeder-Root register 

c1-a.JPGneptune LOGO BW


Neptune Type 4D Meters Parts Details 

Ref. no 

Part no. 

Description 

Order Parts

Neptune 4D-MT with 600 line

100498-018 

Register Complete, 600 Series, Gallons W/ATC 

 

100498-016 

Register Complete, 600 Series Gallons Non/ATC 

100498-015 

Register Complete, 600 Series Liters W/ATC 

100498-019 

Register Complete, 600 Series Liters Non/ATC 

733-001 

Screw, 10-32 x 3/8 fil hd 

82976-001 

Star Conn W/set screw 

100729-001 

Adapter, 600 Series Register 

Bolt, 1/4-28 x 1/2 hex hd 

100062-023 

drilled 

100061-023 

undrilled 

400024-701 

Main Case Cover Assembly 

Cap Screw, 7/16-14 x 1-3/16 

40237-005 

drilled 

40237-004 

undrilled 

4861-016 

Gasket, Main Case 

10 

Gear Train -  Complete 

80905-013 

116.87 reduction (600; 10 liter) 

80905-017 

43.5 reduction (600; US gal) - Large Spindle 

11 

101748-001 

Measuring Chamber Complete with Piston 

12 

42792-000 

Pin, Seal 

13 

42086-000 

Roller, Control 

14 

42791-000 

Diaphragm 

15 

Cap Screw, 3/8-016 x 1 hex hd 

100071-025 

drilled 

100071-024 

undrilled 

16 

400021-701 

Cover, Vapor Release 

17 

100139-012 

Gasket, O-Ring 

18 

87188-001 

Vapor Release Float Assembly 

19 

101749-001 

Bracket 

20 

101738-001 

Strainer, 14 x 88 mesh 

21 

400027-701 

Main Case Assembly 

100370-022 

Pin, Measuring Chamber Locating 

— 

100028-001 

Kit, Valve 

22 

100160-002 

Piston, Differential Valve 

23 

100025-008 

U Cup, Valve 

24 

100024-001 

Spring 

25 

100139-007 

O-Ring, Cover 

26 

100139-006 

O-Ring, Sleeve Sealing 

27 

100027-003 

Sleeve, Valve 

28 

400020-702 

Cover, Differential Valve 

29 

87180-700 

Flange, Inlet or Outlet 

30 

Screw, 5/16-18 x 7/8 hex hd steel 

100064-026 

drilled 

100063-026 

undrilled 

31 

100121-010 

Lockwasher, 5/16 steel 

— 

100017-011 

Tubing Kit, Vapor Release 

32