Gas Pressure Regulator GDJ

Precise pressure regulation over wide turndown ranges
Compensated for varying inlet pressure
Inlet pressure to 5 psig (350 mbar)
Internal safety diaphragm
Wide selection of outlet pressure ranges
Inlet pressure compensation and zero shut-off
CSA approved
CE certified models available

Learn More:
Description Documentation Ordering Information Accessories

Ordering Information								Alternate Product
Model	Model	Connection	Max Inlet pressure	Pressure Test point	Air/Gas	Lead Time	Cart		Model	Outlet Pressure	Order
GDJ 15TN04-0^† Connection: ½″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Gas	GDJ 15TN04-0^†	½″ NPT internal thread	5 psig (350 mbar)	No	Gas	N/A	Not Available		R1NB	7-20 mbar
GDJ 20TN04-0^‡ Connection: ¾″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Gas	GDJ 20TN04-0^‡	¾″ NPT internal thread	5 psig (350 mbar)	No	Gas	N/A	Last Call		R2NB	13-26 mbar
GDJ 25TN04-0^‡ Connection: 1″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Gas	GDJ 25TN04-0^‡	1″ NPT internal thread	5 psig (350 mbar)	No	Gas	N/A	Last Call		R3NB	13-26 mbar
GDJ 40TN04-0^‡ Connection: 1½″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Gas	GDJ 40TN04-0^‡	1½″ NPT internal thread	5 psig (350 mbar)	No	Gas	N/A	Last Call		R4NB	15-30 mbar
GDJ 50TN04-0^‡ Connection: 2″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Gas	GDJ 50TN04-0^‡	2″ NPT internal thread	5 psig (350 mbar)	No	Gas	N/A	Last Call		R6NB	15-30 mbar
GDJ 15TN04-0L^† Connection: ½″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Air	GDJ 15TN04-0L^†	½″ NPT internal thread	5 psig (350 mbar)	No	Air	N/A	Last Call		R1NB	7-20 mbar
GDJ 20TN04-0L^‡ Connection: ¾″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Air	GDJ 20TN04-0L^‡	¾″ NPT internal thread	5 psig (350 mbar)	No	Air	N/A	Not Available		R2NB	13-26 mbar
GDJ 25TN04-0L^‡ Connection: 1″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Air	GDJ 25TN04-0L^‡	1″ NPT internal thread	5 psig (350 mbar)	No	Air	N/A	Not Available		R3NB	13-26 mbar
GDJ 40TN04-0L^‡ Connection: 1½″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Air	GDJ 40TN04-0L^‡	1½″ NPT internal thread	5 psig (350 mbar)	No	Air	N/A	Not Available		R4NB	15-30 mbar
GDJ 50TN04-0L^‡ Connection: 2″ NPT internal thread; Max Inlet pressure: 5 psig (350 mbar); Pressure Test point: No; For Air	GDJ 50TN04-0L^‡	2″ NPT internal thread	5 psig (350 mbar)	No	Air	N/A	Not Available		R6NB	15-30 mbar

^†GDJ 15..T models are set at the factory to 20" WC (50mbar).
^‡GDJ 20-50..T models are set at the factory to 36″ WC (90 mbar).

For all other configurations Contact Combustion 911

Nonstock items, sold as-is All sales are final
Model and Description	Model	Part Number	Description	Stock	Price	Cart
GDJ 20TN04-0 Pressure reducing regulator for gas, 3/4 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)	GDJ 20TN04-0	3155082	Pressure reducing regulator for gas, 3/4 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)
GDJ 25TN04-0 Pressure reducing regulator for gas, 1 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)	GDJ 25TN04-0	3155083	Pressure reducing regulator for gas, 1 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)
GDJ 40TN04-0 Pressure reducing regulator for gas, 1" 1/2 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)	GDJ 40TN04-0	3155084	Pressure reducing regulator for gas, 1" 1/2 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)
GDJ 50TN04-0 Pressure reducing regulator for gas, 2 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)	GDJ 50TN04-0	3155085	Pressure reducing regulator for gas, 2 NPT, 5 PSI max. inlet pressure, set at factory to 36" WC outlet pressure (28-40"WC standard spring range)
GDJ 15TN04-0L Pressure reducing regulator for air, 1/2 NPT, 5 PSI max. inlet pressure, set at factory to 20" WC outlet pressure (16-22"WC standard spring range)	GDJ 15TN04-0L	3155091	Pressure reducing regulator for air, 1/2 NPT, 5 PSI max. inlet pressure, set at factory to 20" WC outlet pressure (16-22"WC standard spring range)
GDJ 15 spring orange GDJ 15 spring orange 16-28 mbar	GDJ 15 spring orange	3089044	GDJ 15 spring orange 16-28 mbar
GDJ 15 Spring brown GDJ 15 Spring brown 22-40 mbar	GDJ 15 Spring brown	3089045	GDJ 15 Spring brown 22-40 mbar
GDJ 20 Spring yellow GDJ 20 Spring yellow 5-15 mbar	GDJ 20 Spring yellow	3089048	GDJ 20 Spring yellow 5-15 mbar
GDJ 25 Spring black GDJ 25 Spring black 12.5-25 mbar	GDJ 25 Spring black	3089049	GDJ 25 Spring black 12.5-25 mbar
GDJ 25 Spring pink/gold GDJ 25 Spring pink/gold 70-100 mbar	GDJ 25 Spring pink/gold	3089052	GDJ 25 Spring pink/gold 70-100 mbar
GDJ 40 Spring red/black GDJ 40 Spring red/black 12.5-25 mbar	GDJ 40 Spring red/black	3089054	GDJ 40 Spring red/black 12.5-25 mbar
GDJ 40 Spring yellow/orange GDJ 40 Spring yellow/orange 25-75 mbar	GDJ 40 Spring yellow/orange	3089056	GDJ 40 Spring yellow/orange 25-75 mbar
GDJ 40 Spring pink/silver GDJ 40 Spring pink/silver 70-100 mbar	GDJ 40 Spring pink/silver	3089057	GDJ 40 Spring pink/silver 70-100 mbar
GDJ 50 Spring dark blue/orange GDJ 50 Spring dark blue/orange 22.5-35 mbar	GDJ 50 Spring dark blue/orange	3089060	GDJ 50 Spring dark blue/orange 22.5-35 mbar
GDJ 50 Spring grey/gold GDJ 50 Spring grey/gold 70-100 mbar	GDJ 50 Spring grey/gold	3089062	GDJ 50 Spring grey/gold 70-100 mbar
GDJ 20/25 Spring black GDJ 20/25 Spring black 12.5-25 mbar	GDJ 20/25 Spring	3089122	GDJ 20/25 Spring black 12.5-25 mbar
GDJ 20/25 Spring dark green/brown GDJ 20/25 Spring dark green/brown 22.5-35 mbar	GDJ 20/25 Spring dark green/brown	3089123	GDJ 20/25 Spring dark green/brown 22.5-35 mbar

Description

GDJ regulators are general-purpose regulators for controlling gas pressure to furnace ovens and other gas-consuming appliances. They are suitable for natural, LP, and clean dry bio-gas at inlet pressures up to 5 psig (350 mbar). Special models are available for air.

Documentation

	FAQ: Kromschröder Product Labels and Type Codes (Blog Post)
	Gas Pressure Regulator GDJ Brochure
	Gas Pressure Regulator GDJ Installation Instructions
	Gas Pressure Regulator GDJ Technical Sheet

Accessories

Model and Description	Price	Cart
GDJ ACC 01 Flow limiter	N/A	Not Available
GDJ 15 SPRING 01 Spring 1-6″ w.c. (2-16 mbar), yellow	N/A	Not Available
GDJ 15 SPRING 02 Spring 4-8″ w.c. (10-20 mbar), black	N/A	Not Available
GDJ 15 SPRING 03 Spring 7-11″ w.c. (16-28 mbar), orange	N/A	Not Available
GDJ 15 SPRING 04 Spring 9-16″ w.c.(22-40 mbar), brown	N/A	Not Available
GDJ 15 SPRING 05^† Spring 16-22″ w.c. (40-55 mbar), l-green/l-blue	N/A	Not Available
GDJ 20/25 SPRING 01 Spring 2-6 ″ w.c. (5-15 mbar), d-green/l-blue	N/A	Not Available
GDJ 20/25 SPRING 02 Spring 4.8-10 ″ w.c. (12-25 mbar), black	N/A	Not Available
GDJ 20/25 SPRING 03 Spring 9-14 ″ w.c.(22.5-35 mbar), d-green/brown	N/A	Not Available
GDJ 20/25 SPRING 04 Spring 12-20 ″ w.c. (30-50 mbar), d-green/orange	N/A	Not Available
GDJ 20/25 SPRING 05 Spring 18-26 ″ w.c. (45-65 mbar), black/l-green	N/A	Not Available
GDJ 20/25 SPRING 06 Spring 24-32 ″ w.c. (60-80 mbar), red/orange	N/A	Not Available
GDJ 20/25 SPRING 07^† Spring 30-40 ″ w.c. (75-100 mbar), pink/gold	N/A	Not Available
GDJ 20/25 SPRING 08 Spring 40-64.2 ″ w.c. (100-160 mbar), yellow/orange	N/A	Not Available
GDJ 40 SPRING 01 Spring 2-6 ″ w.c. (5-15 mbar), black/l-blue	N/A	Not Available
GDJ 40 SPRING 02 Spring 4.8-10 ″ w.c. (12-25 mbar), black/l-green	N/A	Not Available
GDJ 40 SPRING 03 Spring 9-14 ″ w.c. (22.5-35 mbar), silver/orange	N/A	Not Available
GDJ 40 SPRING 04 Spring 12-20 ″ w.c. (30-50 mbar), black/brown	N/A	Not Available
GDJ 40 SPRING 05 Spring 18-26 ″ w.c. (45-65 mbar), red/gold	N/A	Not Available
GDJ 40 SPRING 06 Spring 24-32 ″ w.c. (60-80 mbar), black/orange	N/A	Not Available
GDJ 40 SPRING 07^† Spring 30-40 ″ w.c. (75-100 mbar), pink/silver	N/A	Not Available
GDJ 40 SPRING 08 Spring 40-64.2 ″ w.c. (100-160 mbar), grey/gold	N/A	Not Available
GDJ 50 SPRING 01 Spring 2-6 ″ w.c. (5-15 mbar), white/brown	N/A	Not Available
GDJ 50 SPRING 02 Spring 4.8-10 ″ w.c. (12-25 mbar), white/d-blue	N/A	Not Available
GDJ 50 SPRING 03 Spring 9-14″ w.c. (22.5-35 mbar), white/d-green	N/A	Not Available
GDJ 50 SPRING 04 Spring 12-20″ w.c. (30-50 mbar), white/red	N/A	Not Available
GDJ 50 SPRING 05 Spring 18-26″ w.c. (45-65 mbar), white/orange	N/A	Not Available
GDJ 50 SPRING 06 Spring 24-32″ w.c. (60-80 mbar), d-blue/gray	N/A	Not Available
GDJ 50 SPRING 07^† Spring 30-40″ w.c. (75-100 mbar), grey/gold	N/A	Not Available