Estimated Pressure Drop for Thermoplastic Lined Fittings and Valves

The following table chart defines the Estimated Pressure Drop for Thermoplastic Lined Fittings and Valves.

All values are in psi

Estimated Pressure Drop for Thermoplastic Lined Fittings and Valves
Size mm (in)	Standard 90 deg. elbow	Standard Tee		Plug Valve	Diaphram Valve	Vertical Check Valve	Horizontal Check Valve
Size mm (in)	Standard 90 deg. elbow	Through run	Through run branch	Plug Valve	Diaphram Valve	Vertical Check Valve	Horizontal Check Valve
25 (1)	0.55 (1.8)	0.37 (1.2)	1.4 (4.5)	0.61 (2.0)	2.1 (7)	1.8 (6.0)	4.9 (16)
40 (1½)	1.1 (3.5)	0.70 (2.3)	2.3 (7.5)	1.3 (4.2)	3.0 (10)	1.8 (6.0)	7.0 (23)
50 (2)	1.4 (4.5)	0.91(3.0)	3.0 (10)	1.7 (5.5)	4.9 (16)	3.0 (10)	14 (45)
65 (2½)	1.7 (5.5)	1.2 (4.0)	3.7 (12)	N.A.	6.7 (22)	3.4 (11)	15 (50)
80 (3)	2.1 (7.0)	1.2 (4.1)	4.6 (15)	N.A.	10 (33)	3.7 (12)	18 (58)
100 (4)	3.0 (10)	1.8 (6.0)	6.1 (20)	N.A.	21 (68)	6.1 (20)	20 (65)
150 (6)	4.6 (15)	3.0 (10)	9.8 (32)	N.A.	26 (85)	9.4 (31)	46 (150)
200 (8)	5.8 (19)	4.3 (14)	13 (42)	N.A.	46 (150)	23 (77)	61 (200)
250 (10)	7.6 (25)	5.8 (19)	16 (53)	N.A.	N.A.	N.A.	N.A.
300 (12)	9.1 (30)	7.0 (23)	20 (64)	N.A.	N.A.	N.A.	N.A.
Notes: Data is for water expressed as equal length of straight pipe in m (ft) N.A. = Part is not available from source. Source: “Plastic Lined Piping Products Engineering Manual”