LDNGV0 pages

Conoflow Series LDNGV
Light Duty Natural Gas Vehicle Regulator
The NEW Light Duty NGV Regulator (LDNGV Regulator) incorporates the same robust design and manufacturing practices as the
HPNGV series NGV Regulator, and offers improvements in function and value for smaller engine applications. This regulator provides
the market with a Durable, Stable, Predictable and Repeatable regulator for smaller fuel injected NGV engine (to 5.0 liter displacement)
applications.
Key design features include an integral (and serviceable) 10 micron filter, an optional solenoid valve (high pressure shut-off), an optional
inlet pressure sensor, which is matched to the regulator’s performance, compact size, all fluid connections on a single side, an optional
bonnet to intake manifold connection, outstanding performance and durability, all in a handsome and easy to install package. Certified
to ECE R110, the LNDV Regulator is proven to be a safe and reliable pressure control element. Certifications and Approvals pending
are for ISO15500, ANSI/AGA NGV3.1 and ARAI Type Approval AIS-037.

Standard Specifications
Regulated Media:
Compressed Natural Gas
Inlet Pressure:
300 to 3600 psig (2.07 to 24.84 Mpa) to meet all
performance specifications
Outlet Pressure:
Factory calibrated per order / Range from 50 to
150 PSIG (0.345 to 1.03 Mpa)
Proof Pressure:
Minimum 150% of operating pressure
Burst Pressure:
Minimum 400% of operating pressure
Pressure Accuracy:
Outlet pressure to be within ±15 psi (0.103 Mpa)
of factory calibrated outlet pressure throughout
range of flow, inlet pressure and temperature
Flow Capacity:
110 lb/hr (50 kg/hr)
Filtration:
10 micron, field serviceable element
Temperature:
-40 to 257 °F (-40 to 125 °C)
Application:
Fuel injected engines to 5.0 liter displacement
(normally aspirated and turbocharged)
Connections:
Inlet (high pressure) gas: SAE-4, per SAE
J1926
Outlet (low pressure) gas: SAE-6, per SAE
J1926
PRRV Gas Discharge Port: 3/8-18 NPT Female
Engine Coolant Ports: 1/4-18 NPT Female
Optional Bonnet: 3/16” (4.8 mm) Hose Barb
Optional Solenoid: Amp Superseal 1.5 (2 wire)
Optional Sensor: Packard Metripack 150 (3 wire)
Mounting:
Sides:
(2) M10 x 1.5 bolt threads per side
Bottom: (3) M8 x 1.25 bolt threads
Weight:
Refer to the table on page 4
Approvals:
ECE R110
Pending:
ANSI/AGA
NGV3.1
ISO 15500
ARAI Type
Approval
AIS-037

Ordering Sequence — Select desired option for each category
REGULATOR MODEL BREAKDOWN (CED CODE)
TEXT POSITION
1 through 5

OPTION CODE
LDNGV
S
C

6

7-8

XX
25
50
NOTES:

9 - 10

XX
12
24
NOTES:

11

A
B
C
D
NOTES:

12 - 14

XXX

DEFINITION OF CHARACTER
Natural Gas Vehicle Fuel Pressure Regulator
REGULATOR BONNET OPTIONS
Standard Bonnet (Atmospheric pressure reference)
Captured Bonnet (3/16” Straight Hose Barb)
SENSOR OPTIONS
No Sensor (SAE-3 Port will be plugged)
Sensor Only - 0.25 to 4.75 Volt Output (Notes 1,2)
Sensor Only - 0.50 to 4.50 Volt Output (Notes 1,2)
1. See drawing for electrical connection.
2. Sensor output with 5.0 volt DC excitement for 5000
psi span.
SOLENOID OPTIONS
No Solenoid Valve (Port will be plugged)
Solenoid Only - Normally Closed Lock Off Solenoid 12 Volts DC (Notes 1,2)
Solenoid Only - Normally Closed Lock Off Solenoid 24 Volts DC (Notes 1,2)
1. See drawing for electrical connection.
2. Maximum solenoid wattage: 24 watts.
PRESSURE REGULATOR RELIEF VALVE (PRRV)
OPTIONS
100 psi (0.69 Mpa) Opening Pressure
150 PSI (1.03 Mpa) Opening Pressure
200 PSI (1.38 Mpa) Opening Pressure
250 PSI (1.73 Mpa) Opening Pressure
1. Opening pressure should be at least 50 psi (0.345
MPA) greater than the specified output pressure.
2. The PRRV discharges into a 3/8-18 NPT port.
The user may route any gas discharge from the PRRV
safely out of the area.
OUTPUT PRESSURE SELECTION
Regulators can be factory set from 50 to 150 PSIG
(0.346 to 1.03 Mpa). For outlet pressure settings less
than 100 PSIG, use 0XX format.

Example
Series - Regulator Base Model
Regulator Bonnet
Sensor Options
Solenoid Options
Pressure Regulator Relief Valve (PRRV)
Output Pressure Selection
LDNGV S2512A135