2PC Flanged Ball Valve

Designed for chemical and power applications, this 2PC flanged ball valve handles corrosive media like nitric and acetic acid. With stainless or carbon steel body options and PTFE/RPTFE seats, it ensures reliable shut-off from -29°C to 121°C under up to PN64/600LB pressure.

Valve Size: DN15 – DN200
Pressure Rating: PN16 / PN25 / PN40 / PN64; 150LB – 600LB
Body Material: Stainless Steel (CF8 / CF8M), Carbon Steel (WCB)
Ball Material: Stainless Steel
Seat Material: PTFE / RPTFE / PEEK
Connection: RF, RTJ
Temperature Range: -29°C to 121°C
Applicable Media: Nitric acid, acetic acid, water, oil, steam

Categories: All Products, Ball Valve

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Product Technical Specifications

Model: Q41F
Design Standard: GJB/T 12224, ASME B16.34
Connection End Standard: JB/T 79.1, ASME B16.5
Face-to-Face Dimension: GB/T 12221, ASME B16.10
Test Standard: GB/T 13927, API 598

Product Dimensions and Structure

NO.	PART NAME	MATERIAL
1	HANDLE	WCB+Zn
2	SNAP RING	314
3	STOP PLATE	314
4	GLAND	CF8
5	BOLT	314
6	PACKING	PTFE
7	GASKET	PTFE
8	STEM	F314
9	SEAT	PTFE
10	BALL	F314
11	BODY	CF8
12	GASKET	PTFE
13	CAP	CF8
14	NUT	314
15	BOLT	314

Performance Parameters

ITEM SIZM	L	W	H	D	D1	D2	b	f	z-d
1/2"	108	130	59	90	60.3	34.9	8	2	4-Φ16
3/4"	117	130	63	100	69.9	42.9	8.9	2	4-Φ16
1"	127	160	75	110	79.4	50.8	9.6	2	4-Φ16
1 1/4"	140	160	85	115	88.9	63.5	11.2	2	4-Φ16
1-1/2"	165	230	95	125	98.4	73	12.7	2	4-Φ16
2"	178	230	107	150	120.7	92.1	14.3	2	4-Φ19
2 1/2"	191	400	142	180	139.7	104.8	15.9	2	4-Φ19
3"	203	400	152	190	152.4	127	17.5	2	4-Φ19
4"	229	700	178	230	190.5	157.2	22.3	2	8-Φ19

Which Flange Details Must Match the Pipeline?

A flanged ball valve is not identified by nominal size alone. The pipeline specification should also state the flange standard, pressure class and facing. Raised-face and ring-type joint connections require different mating flange details.

Before ordering, compare the flange outside diameter, bolt-circle diameter, hole quantity and face-to-face length with the applicable drawing. Use dimensions for the selected pressure class because a different class can change the flange and body dimensions.

How Should CF8, CF8M and WCB Options Be Specified?

The current product page lists carbon steel and stainless steel body options. Buyers should identify the actual material grade required by the project rather than using “stainless steel” as the complete specification. Body, ball, seat and sealing materials should be reviewed as one valve configuration.

For chemical service, provide the medium, concentration where relevant, and operating temperature. Listing those conditions gives the supplier a basis for checking the requested material combination without turning the product page into a universal chemical-compatibility claim.

What Installation Information Is Worth Checking Before Approval?

Confirm the available face-to-face space, flange alignment and handle clearance. The valve should be installed without using the flange bolts to pull misaligned piping into position. The mating flanges and gaskets should correspond to the selected flange facing.

For a quotation, provide the size, class, flange standard and facing, body and seat materials, medium, operating conditions and quantity. Attach the mating-flange or piping specification when it is available.