This is my Matheson 3810 Dual Stage Stainless Steel Regulator for controlling my CO2 system in my planted tank.
Part list (quantities):
SS-4-HLN-2.00 Stainless Steel Pipe Fitting, Hex Long Nipple, 1/4 in. Male NPT, 2 in. Length (1);
SS-4-RSE-2 Stainless Steel Pipe Fitting, Reducing Street Elbow, 1/4 in. Female NPT x 1/8 in. Male NPT (1);
SS-2-ME Stainless Steel Pipe Fitting, Male Elbow, 1/8 in. Male NPT (1);
SS-2C2-1/3 SS Poppet Check Valve, Fixed Pressure, 1/8 in. MNPT, 1/3 psig (0.03 bar) (1);
SS-4-TA-7-2 SS Swagelok Tube Fitting, Female Tube Adapter, 1/4 in. Tube OD x 1/8 in. Female NPT (2);
SS-400-7-2 SS Swagelok Tube Fitting, Female Connector, 1/4 in. Tube OD x 1/8 in. Female NPT (1);
SS-400-SET 316 SS Ferrule Set (1 Front Ferrule/1 Back Ferrule) for 1/4 in. Swagelok Tube Fitting, (10);
SS-402-1 316 Stainless Steel Nut for 1/4 in. Swagelok Tube Fitting (3);
SS-405-2 Stainless Steel Tubing Insert, 1/4 in. OD x 1/8 in. ID (5 );
SS-SS4-A fine metering needle valve (1)
Burkert 00463939 2/2 Miniature Solenoid Valve Stainless Steel Body (1) ;
Burkert 008403 Plug Connection With LED No Varistor (1);
Smith Stainless Steel Nipple, E99-320C43 (1);
Smith Stainless Steel Nut, E99-320C44 (1);
1/8″ ID x 1/4″ OD PVC Tubing Cole Parmer (1);