Van Air is the originator of single tower dryer technology. Our single tower absorbent desiccant compressed air dryers prevent moisture in pipelines by suppressing the pressure dew point by 20° F or more from the inlet temperature. Water vapor is removed from the air as it passes through a bed of absorbent desiccant within the dryer. Our single tower absorbent desiccant dryers are adaptable to changing conditions and can be installed indoors or out. They are the most versatile and cost-effective air dryers manufactured today.

Van Air single tower compressed air dryers require minimal maintenance, have no moving parts, and are built to last. All metal surfaces of the vessel interior are primed and coated with polyurethane material. All exterior metal surfaces are protected with an enamel coating. All of this ensures that our single tower air dryers are able to withstand corrosion, chipping, and cracking in the most demanding environments. With a 10 year warranty, we offer the best vessel warranty in the business.

No electricity is needed to operate a Van Air single tower desiccant air dryer. Simply add the appropriate Van Air absorbent desiccant for effective and efficient operation. Typically, a properly sized single tower air dryer only needs to be filled with absorbent desiccant two or three times per year. In addition to the energy savings, operating costs are minimized since desiccant usage is based on actual air flow through the dryer.

The Van Air absorbent desiccant used in our single tower compressed air dryers is CFC free. It is also non-toxic and non-polluting posing no hazard to groundwater, living organisms or sewage treatment systems as demonstrated through the results of a bioassay test.

With low initial captial investment and operating costs, energy-free and environmentally safe operation, and wide application versatility, our single tower compressed air dryers are the winning choice for maximizing air system efficiency and corporate profits. Contact us to discuss how Van Air compressed air dryers and equipment can provide you with the best value for your money.

Need a complete skid package with air dryer, aftercooler, and filter?
Consider the Blast Pak or Dry Pak Desiccant Packaged Air Dryer Systems.

Single Tower Air Dryer Flow Capacities - SCFM

Model	5 PSIG	10 PSIG	15 PSIG	25 PSIG	50 PSIG	75 PSIG	100 PSIG	125 PSIG	150 PSIG	175 PSIG	200 PSIG	250 PSIG
D-2	1.2	1.5	1.8	2.4	3.9	5.5	7	8.5	10.1	11.6	13.1	16.2
D-4	1.7	2.2	2.6	3.5	5.6	7.8	10	12.2	14.4	16.5	19	23
D-8	8.6	11	13	17	28	39	50	61	72	83	94	115
D-12	17	22	26	35	56	78	100	122	144	165	187	231
D-16	27	33	40	54	87	121	155	189	223	256	290	358
D-20	43	54	65	87	141	196	250	304	359	413	468	-
D-24	64	81	97	130	212	293	375	457	538	620	702	-
D-30	107	135	162	216	353	489	625	761	897	1034	1170	-
D-36	146	183	220	294	479	665	850	1035	1221	1406	-	-
D-42	215	269	324	433	705	978	1250	1522	1795	-	-	-
D-48	258	323	388	519	846	1173	1500	1827	2154	-	-	-
D-54	344	431	518	692	1128	1564	2000	2436	2872	-	-	-
D-60	429	538	647	865	1410	1955	2500	3045	-	-	-	-
D-66	515	646	777	1038	1692	2346	3000	3654	-	-	-	-
D-72	601	754	906	1211	1974	2737	3500	4263	-	-	-	-
D-78	687	861	1036	1384	2256	3128	4000	4872	-	-	-	-
D-84	773	969	1165	1558	2538	3519	4500	5481	-	-	-	-
D-90	945	1184	1424	1904	3102	4301	5500	6699	-	-	-	-
D-96	1031	1292	1554	2077	3384	4692	6000	7308	-	-	-	-
D-102	1202	1507	1813	2423	3949	5474	7000	8526	-	-	-	-
D-108	1288	1615	1942	2596	4231	5865	7500	9135	-	-	-	-
D-114	1460	1830	2201	2942	4795	6647	8500	10,353	-	-	-	-
D-120	1632	2046	2460	3288	5359	7429	9500	11,571	-	-	-	-
D-126	1803	2261	2719	3634	5923	8211	10,500	12,789	-	-	-	-
D-132	1975	2476	2978	3980	6487	8993	11,500	14,007	-	-	-	-
D-138	2147	2692	3237	4327	7051	9776	12,500	15,224	-	-	-	-
D-144	2319	2907	3496	4673	7615	10,558	13,500	16,442	-	-	-	-
D-156	2748	3446	4143	5538	9025	12,513	16,000	19,487	-	-	-	-

Sizing Instructions

Locate the column for the minimum operating pressure and read down to the capacity that meets or exceeds your requirement. Next, find the corresponding dryer model group in the left column. From that model group, choose the specific model that meets or exceeds your maximum anticipated operating pressure based on the following model suffixes.

Single Tower Air Dryer Dimensions and Specifications - Inches and Pounds

Model	Flow (SCFM)	A	B	C	D	E	F	In / Out Conn.	Filler Hatch Opening	Vessel Weight	Initial Fill Dry-O-Lite (lbs)
D-2	7	3.5	12.5	11.8	-	-	1.2	¹/₂ NPT	Removable	4	2
D-4	10	4.5	28	7	22.5	-	5.1	³/₄ NPT	2 NPT	30	6
D-8	50	8.5	35	9.5	28	-	5.1	³/₄ NPT	2 NPT	60	30
D-12	100	13	51	14	38	8.5	-	2 NPT	4 x 3	130	130
D-16	155	16	55	15.5	42	13	-	2 NPT	4 x 3	145	220
D-20	250	20	56	16	43	16	-	2 NPT	4 x 6	210	360
D-24	375	24	59	17	44	16	-	2 NPT	4 x 6	285	500
D-30	625	30	64	22	45	24	-	3 NPT	4 x 6	640	710
D-36	850	37	70	25	49	24	-	3 FLG	4 x 6	780	1130
D-42	1250	43	86	16	-	-	-	4 FLG	12 x 16	1275	1700
D-48	1500	49	91	18.5	-	-	-	4 FLG	12 x 16	2150	2300
D-54	2000	55	94	18.5	-	-	-	4 FLG	12 x 16	2640	2900
D-60	2500	61	97	18.5	-	-	-	4 FLG	12 x 16	2700	3600
D-66	3000	67	100	18.5	-	-	-	6 FLG	12 x 16	3200	4400
D-72	3500	73	110	18.5	-	-	-	6 FLG	12 x 16	4075	6300
D-78	4000	79	115	21	-	-	-	6 FLG	12 x 16	4775	7400
D-84	4500	85	124	21	-	-	-	6 FLG	12 x 16	5700	10,000
D-90	5500	91	127	21	-	-	-	6 FLG	12 x 16	7200	11,000
D-96	6000	97	130	21	-	-	-	6 FLG	12 x 16	7800	13,000
D-102	7000	103	137	25	-	-	-	8 FLG	12 x 16	9000	14,000
D-108	7500	109	139	24	-	-	-	8 FLG	12 x 16	10,300	16,000
D-114	8500	115	142	24	-	-	-	8 FLG	12 x 16	12,440	18,000
D-120	9500	121	145	24	-	-	-	8 FLG	12 x 16	12,900	20,000
D-126	10,500	127	148	24	-	-	-	8 FLG	12 x 16	15,800	22,000
D-132	11,500	133	157	24	-	-


	Manufacturers Representative for Process Equipment since 1976..