DI GROOVED HEAVY DUTY RIGID COUPLING

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Heavy duty rigid couplings are for grooved pipeline connection. At the joint
part, the adjacent pipe ends are not allowed to have relative angular displacement and corresponding axial rotation

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Description

DI GROOVED HEAVY DUTY RIGID COUPLING

1. Description of Products

Heavy duty rigid couplings are for grooved pipeline connection. At the joint part, the adjacent pipe ends are not allowed to have relative angular displacement and corresponding axial rotation

Dimensions:

2″(DN50)– 12″(DN300)

Design Standard:

ISO6182, AWWA C606, GB 5135.11

Connection Standard:

ASME B36.10, ASTM A53-A53M, ISO 4200

Working Pressure:

2″–8″(DN50 – DN200):750PSI
10″–12″(DN250 – DN300):500PSI

Application:

Heavy duty rigid couplings are mainly suitable for medium and low pressure pipeline systems with nominal pressure 500-750 PSI, nominal size DN50-DN300, temperature range of – 20 ℃-+180℃, which are widely applied in water supply and drainage, fire-fighting, air conditioning, etc

Material of Pipe :

Welded and seamless rolled steel pipes according to ASME B36.10, ASTM A53-A53M, ISO 4200, GB/T 21835

Specification of Material

ASTM A536, Ductile iron according to 65-45-12. The nodularity is more than 90%, ensuring excellent physical and mechanical properties

Surface Treatment:

□Electrophoretic painting
□Spray molding
□Hot-dip galvanizing
□Bare metal（Black）
□Others would be available upon clients’ detailed request

2. SPECIFICATIONS

Housing:
ASTM A536, Ductile iron according to 65-45-12. The nodularity is more than 90%, ensuring excellent physical and mechanical properties.
Gasket:
1、EPDM Gasket，code E：
Temperature：-34℃～+110℃ （-30～+230℉）；
Applicable media: water, gas, diluted acid (base), and other chemicals (excluding hydrocarbons)
Note: Strictly prohibit the use of oil and hydrocarbons.

2、NBR，code D:
Temperature：-29℃～+82℃ （-20～+180℉）;
Applicable media: Petroleum products, vegetable oils, mineral oils, etc. Note: strictly prohibit use with high temperature substances.

3、Silicone Rubber, code S：
Temperature: -40℃～+177℃ （-40～+350℉）
Applicable media: High temperature and dry air and some high temperature chemicals, drinking water and so on.
4 、 Chloroprene Rubber，code LD： Temperature：-32℃～+82℃ （-26～+180℉） Applicable media: sea water
5 、 Fluororubber, code F： Temperature: -20℃～+180℃
Applicable media: Hot oil, some chemical products, good oxidation resistance.
Bolts/Nuts:

ANSI Heavy Hex Nut

1.Material: SAE J995 2.

2.Thread: ANSI B 1.1-1982, class 2B.

3.Surface Treatment: Zinc electroplated per ASTM B633 CLASS FE/ZN5 TYPE Ⅲ , thickness ≥ 5μm per class SC1.

Metric Heavy Hex Nut

1. Material: ISO 898-2:1992 \ GB/T3098.2-2000 Class 8.
2.Thread: ISO 261, tolerance 6h for M10& M12, 7h for M16 and above.
3.Surface Treatment: Zinc Electroplated followed by a yellow chromate dip per ISO 2081 FE/ZN5, ISO4520 CLASS 1A.

ANSI Oval Neck Track Bolt
1.Material: SAE J429 5.
2.Thread: UNC thread per ANSI B 1.1 Class 2A.
3.Surface Treatment: Silver chromate electroplated per ASTM B633 CLASS FE/ZN5 TYPE Ⅲ, thickness ≥ 5μm per class SC1.

Metric Oval Neck Track Bolt
1. Material: ISO 898-1: 1992 \ GB/T3098.1-2000 Class 8.8.
2.Thread: ISO metric thread per ISO 261, tolerance 6h.
3.Surface Treatment: Yellow chromate electroplated per ISO 2081 FE/ZN5 ISO4520 CLASS 1A。

3. DIMENSIONS

Nominal	Pipe	Working	Dimensions	Dimensions	Dimensions	Bolt
Size	O.D.	Pressure	A	B	C	Bolt
DN/in	mm/in	PSI/MPa	mm/in	mm/in	mm/in	No.-SIZE
50	60.3	750	88	136	45.5	2-1/2X75
2	2.375	5.17	3.46	5.35	1.79	2-1/2X75
65	73	750	101	150	45.5	2-1/2X75
2½	2.875	5.17	3.98	5.91	1.79	2-1/2X75
65	76.1	750	104	155	45.5	2-1/2X75
2½	3	5.17	4.09	6.1	1.79	2-1/2X75
80	88.9	750	120.5	174	46.5	2-1/2X75
3	4.5	5.17	4.74	6.85	1.83	2-1/2X75
100	114.3	750	150.5	217	50.5	2-5/8X80
4	4.5	5.17	5.93	8.54	1.99	2-5/8X80
125	139.7	750	179	249	52	2-3/4X115
5	5.5	5.17	7.05	9.8	2.05	2-3/4X115
125	141.3	750	180.5	250	51.5	2-3/4X115
5	5.563	5.17	7.11	9.84	2.03	2-3/4X115
150	165.1	750	208	281	51.5	2-3/4X115
6	6.5	5.17	8.19	11.06	2.03	2-3/4X115
150	168.3	750	211.5	285	52	2-3/4X115
6	6.625	5.17	8.33	11.22	2.05	2-3/4X115
200	219.1	750	269	358	61	2-7/8X125
8	8.625	5.17	10.59	14.09	2.4	2-7/8X125
250	273	500	326.5	420.7	63.5	2-7/8X125
10	10.75	3.45	12.85	16.56	2.5	2-7/8X125
300	323.9	500	385	481	66	2-7/8X140
12	12.75	3.45	15.16	18.94	2.6	2-7/8X140