Heatcraft Refrigeration Products 25000102 operation manual Henry Relief Valve Capacity Rating

Installation and Operations Manual

Table 17. Henry Relief Valve Capacity Rating

Type	Catalog	Size Connection			Standard Pressure Settings PSIG
	Number	Inlet	Outlet	350		400	425	450
Angle	526E	3/8 MPT	3/8 FLARE	10.2		11.6	12.3	13.0
	527E	1/2 MPT	5/8 FLARE	28.5		32.4	34.4	36.3
	5231	3/8 MPT	3/8 FLARE	11.2		12.7	13.5	14.3
	5231-A	3/8 MPT	1/2 FLARE	18.6		21.1	22.4	23.7
	5231	1/2 MPT	5/8 FLARE	18.6		21.1	22.4	23.7
Straight	5232	1/2 MPT	5/8 FLARE	28.1		32.0	33.9	35.8
Through	5240-1/2	1/2 MPT	3/4 FPT	41.2		46.8	49.1	52.5
	5242-3/4	3/4 MPT	3/4 FPT	41.2		46.8	49.1	52.5
	5244-1	1 MPT	1 FPT	74.0		84.2	89.3	94.4
	5246-1-1/4	1-1/4 MPT	1-1/4 FPT	129.7		147.5	156.4	165.4

Table 18. Discharge Piping Table

Maximum Length of Discharge Pipe in Feet

* For 400 PSIG Pressure Setting

Relief Device	Soft Copper Tube (OD)					Schedule 40 Pipe
Capacity
	3/8”	1/2”	5/8”	1/2”	3/4”	1”	1-1/4”	1-1/2”	2”
Lbs. Air/Min.
10	3-1/2	19-1/4	61	108	445
12	2-1/2	12-1/4	44	75	308
14	2	9-1/2	32	56	228
18		5-1/4	19-1/4	33	137
20		4-1/4	16	28	110	371
25		2-1/2	9-1/2	18	72	238
30		2	7	12	49	165
35		2	5-1/4	9	37	121
40			3-1/2	7	28	93	366
50			2-1/2	4	18	60	233
70				3	9	30	119	257
80				2	7	23	91	198
90				2	5	18	72	156
125					3	10	37	81	282
150					2	7	26	56	196

For Relief Devices set at 400 psig

•Obtain the capacity at 400 psig setting

•Locate this capacity or the nearest larger capacity in the left-hand column of the discharge piping table above and read across to obtain the maximum lengths for each tube and pipe size

For relief devices set at 350 psig, use the above table and multiply by .75 to determine maximum lengths For relief devices set at 425 psig, use the above table and multiply by 1.15 to determine maximum lengths For relief devices set at 450 psig, use the above table and multiply by 1.25 to determine maximum lengths

24 Part # 25000102