What is a Coupolet?

What is a Coupolet?

A coupolet is designed for use in fire protection sprinkler systems and other low pressure piping applications. manufactured with NPT female threads for 300# service and are UL Listed and F.M. approved.

Type of Olets	coupolet
Size	1/8″ (6 NB) to 20″ (500NB)
Standard	MSS SP-97
Class	3000LB（SCH40，SCH80，STD，XS） 6000LB（SCH160，XXS）
Material	Grade
Carbon Steel	ASTM / ASME A/SA 105 ASTM / ASME A 350 , ASTM A 181 LF 2 / A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F70
Stainless Steel	ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H,904L
Alloy Steel	ASTM / ASME A/SA 182 F12, A182 F11, A182 F22, A182 F5, A350 LF2, A350 LF3

Coupolet

300# Female Threaded Coupolet
Nominal Outlet Size	Dimensions
	A	C	F
1/2	15/16	0.745	1.188
3/4	1	0.958	1.441
1	1 3/16	1.188	1.562
1 1/4	1 5/16	1.550	1.906
1 1/2	1 9/16	1.780	2.188
2	1 11/16	2.260	2.750
2 1/2	1 13/16	2.890	3.386
3	2 1/2	3.400	4.000
4	3	4.380	5.000

Interchangeability or Combination of Sizes
Coupolet Outlet Size Inches	Run Sizes
1/2	1/2	3/4	1-1/4 -1	2-1/2 – 1-1/2	8-3	36-10
3/4	3/4	1	2 – 1-1/4	6 – 2-1/2	36-8
1	1	1-1/4	2 – 1-1/2	4 – 2-1/2	8-5	36-10
1-1/4	1-1/4	1-1/2	2-1/2 – 2	4-3	8-5	36-10
1-1/2	1-1/2	2	2-1/2	4-3	8-5	16-10	36-18
2	2	2 1/2	3	3-1/2	4	5	6	8	10	16-12	36-18
2-1/2	2-1/2	3	3-1/2	4	5	6	8	12-10	16-14	36-18
3	3	3-1/2	4	5	6	8	10	12	14	18-16	36-20
4	5	6	8	10	14-12	16	18	20	24	36

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