Johnson Screens Flush Threaded PVC Casing and Slotted Pipe Specifications

Physical Data For Common Size Pipe schedule 40, 80, 120 and large diameter SDR 17*

Nominal Pipe Size (in.)	O.D. (in.)	Sch. 40			Sch. 80			Sch. 120/SDR 17
		Avg I.D. (in.)	Min Wall (in.)	Nom Wt. (lbs./ft.)	Avg I.D. (in.)	Min Wall (in.)	Nom Wt. (lbs./ft.)	Avg I.D. (in.)	Min Wall (in.)	Nom Wt. (lbs./ft.)
0.5	0.84	0.60	0.11	0.17	0.53	0.15	0.21	0.48	0.17	0.24
0.75	1.05	0.80	0.11	0.23	0.72	0.15	0.29	0.69	0.17	0.31
1	1.32	1.03	0.13	0.33	0.94	0.18	0.42	0.89	0.20	0.46
1.25	1.66	1.36	0.14	0.45	1.26	0.19	0.59	1.20	0.22	0.65
1.5	1.90	1.59	0.15	0.54	1.48	0.20	0.71	1.42	0.23	0.79
2	2.38	2.05	0.15	0.72	1.91	0.22	0.98	1.85	0.25	1.11
2.5	2.88	2.45	0.20	1.14	2.29	0.28	1.50	2.24	0.30	1.62
3	3.50	3.04	0.22	1.49	2.86	0.30	2.01	2.76	0.35	2.31
4	4.50	4.00	0.24	2.12	3.79	0.34	2.94	3.57	0.44	3.71
5	5.56	5.02	0.26	2.87	4.77	0.38	4.08	4.37	0.50	5.00
6	6.63	6.03	0.28	3.73	5.71	0.43	5.61	5.43	0.56	7.13
8	8.63	7.94	0.32	5.62	7.57	0.50	8.52	7.27	0.51	8.40
10	10.75	9.98	0.37	7.97	9.49	0.59	12.64	9.38	0.63	13.27
12	12.75	11.89	0.41	10.53	11.29	0.69	17.38	11.13	0.75	18.89
14	14.00	13.07	0.44	12.46	12.41	0.75	20.85	12.21	0.83	22.55
16	16.00	14.94	0.50	16.29	14.21	0.84	26.81	13.95	0.94	31.66
18	18.00	16.81	0.56	20.59	16.01	0.94	33.54	15.78	1.06	35.60

Custom lengths up to 20 ft. can be provided on request. Laying (makeup) length is standard for commonly used materials such as 1, 2, 4, 6 in. diameter Schedule 40 and 80 PVC. Other sizes are end-to-end length unless specified. Standard threads per inch (TPI), for pipe sized .5 -1 in. is 8 TPI, 1.25 - 1.5 in. is 4 TPI, and 2 in. and up is 2 TPI. Customized screen products for special pipe lengths, slot sizes, slot spacing and thread types are available to meet specifications. All flush threaded material is supplied with an O-ring. All environmental screens and casings, up to 8 in. diameter, are cleaned and bagged prior to shipment.

Temperature De-Rating Table

Curing of cement and grout generates sufficient heat to affect PVC strength and performance. When operating at elevated temperatures, the actual values for Collapse Pressure, Burst Pressure and Tensile Strength will be de-rated according to the chart.

Operating Temp. (ºF / ºC)	Strength De-Rating Factor
73 / 23	1.00
80 / 27	0.88
90 / 32	0.75
100 / 38	0.62
110 / 44	0.51
120 / 49	0.40
130 / 54	0.31
140 / 60	0.22