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Pneumatic Eccentric Control Valve Check Valves Small Size Light Weight

FR Series Pneumatic Eccentric Control Valve

The FR series pneumatic eccentric rotary control valve (also known as the cam flexure valve) adopts Masoneilan technology combined with China's characteristics. It integrates the advantages of single-seat valves, ball valves, butterfly valves, etc., and has prominent features such as a simple structure, small size, light weight, large rated flow coefficient, wide adjustable range, wide operating temperature range, small leakage, and good stability.

Since the valve core and valve stem only perform rotational movement, the friction force they bear during operation is very small. When the valve core and valve seat are in contact and closed, the flexible arm of the valve core produces slight elastic deformation and elastic tension under the thrust of the actuator, making the contact between the valve core and the valve seat more tight and firm. Therefore, the leakage of the eccentric valve is very small. At the same time, the actuator thrust required to close the valve is smaller compared with ball valves and butterfly valves.

For these reasons, this series of products is widely used in industrial process automatic control systems such as chemical industry, metallurgy, and power plants.

1. Basic technical parameters
Caliber		1＂	1＂ 12	2＂	3＂	4＂	6＂	8＂	10＂	12＂
Flow coefficient Cv		14	30	50	135	230	500	850	1300	1750
		8.4	18	30	81	138	300	510	780	1050
		5.6	12	20	54	92	200	340	520	700
Flow characteristic		Approximate value line (logarithmic linear and other characteristics must be equipped with a valve positioner)
Pressure class		ANSI150300600
Stroke		Rotation angle 50°
Valve seat leakage		ANSI B16.104 Ⅳ (metal seal) Ⅵ (soft seal)
Operating temperature (℃)		-195～+400
Turndown ratio		100∶1
Actuator	Rolling diaphragm type	DL1			DL2		DL3
	Pneumatic piston type	PL1			PL2		PL3		PL4
Connection form		Wafer type

3. Structural materials
Serial Number	Name	Material
1	Valve Body	WCBSCS13SCS14ZG25ZGlCr18Ni9ZG0Cr18Ni12Mo2Ti
2	Lower Guide Bushing	9Cr18SUS316+ST
3	Valve Seat	0Cr18Ni12Mo2TiSUS316+ST
4	Valve Core	SUS316+ST
5	Gland Nut	0Cr18Ni12Mo2TiSUS316+ST
6	Upper Guide Bushing	9Cr18SUS316+ST
7	Valve Stem	0Cr18Ni12Mo2TiSUS316
8	Gasket	1Cr18Ni90Cr18Ni12Mo2Ti
9	Packing	Polytetrafluoroethylene + asbestos graphite
10	Packing bolt	1Cr18Ni9
11	Packing gland	1Cr18Ni9
12	Pressure plate	ZG25ZG1Cr18Ni9
13	Nut	1Cr18Ni9

4. Allowable pressure difference

(1) Hard seal structure Unit: MPa
Caliber	Cv	Air-to-open and flow-opening type	Air-to-open and flow-closing type or air-to-close and flow-opening type
			Air supply pressure
			0.14	0.18	0.21	0.25	0.28	0.32	0.35	0.39	0.42	0.46	0.49	0.53
1＂	14 5.6	7.0 10.2	7.0 10.0
＂ 1 1 2	30 12	4.7 9.8	3.0 6.3	5.6 10.2
2＂	50 20	2.5 5.2	1.6 3.3	3.5 7.0	4.2 7.0
3＂	135 54	2.0 4.5	1.3 2.8	2.7 6.1	4.2 7.0
4＂	230 92	1.0 2.2	0.63 1.4	1.4 3.0	2.2 4.9	3.1 6.8	3.9 7.0	4.1 7.0
6＂	500	0.63			0.35 0.35 0.35	0.91 0.91 0.91	1.4 1.4 1.4	2.1 2.1 2.1	2.5 2.5	3.1 3.1	3.7 3.7	4.2 4.2
6＂	200	1.4			0.77 0.77 0.77	2.0 2.0 2.0	3.2 3.2 3.2	4.4 4.4 3.5	5.6 5.6	6.8 6.8	7.0 7.0
	850	0.32			0.18 0.18 0.18	0.42 0.42 0.42	0.7 0.7 0.63	1.0 1.0	1.3 1.3	1.5	1.8	2.1	2.4	2.5
8＂	510	0.49			0.28 0.28 0.28	0.7 0.7 0.7	1.1 1.1 1.0	1.5 1.5	2.0 2.0	2.4	2.8	3.2	3.7	3.9
	340	0.77			0.42 0.42 0.42	1.1 1.1 1.0	1.8 1.8 1.5	2.5 2.5	3.2 3.2	3.9	4.5	5.2	5.9	6.3
10＂	1300	0.18			0.11 0.11 0.11	0.25 0.25 0.25	0.38 0.35 0.38	0.56 0.56	0.7 0.7	0.84	0.98	1.1	1.3	1.5
	780	0.42			0.14 0.14 0.14	0.35 0.35 0.35	0.56 0.56 0.49	0.84 0.84	1.1 1.1	1.3	1.5	1.8	2	2.2
	520	0.42			0.25 0.25 0.25	0.63 0.63 0.63	0.98 0.98 0.84	1.3 1.3	1.7 1.7	2.1	2.5	2.8	3.2	3.6
	1750	0.11				0.14 0.14 0.14	0.21 0.21 0.621	0.32 0.32	0.39 0.39	0.49 0.42	0.56	0.63	0.7	0.84
12＂	1050	0.14			0.07 0.07 0.07	0.21 0.21 0.21	0.35 0.35 0.32	0.49 0.49	0.63 0.63	0.7	0.84	0.98	1.1	1.3
	700	0.25			0.14 0.14 0.14	0.35 0.35 0.35	0.56 0.56 0.49	0.77 0.77	0.98 0.98	1.3	1.5	1.7	1.9	2.1

(2) Soft seal structure Unit: MPa
Caliber	Cv	Air-to-open and flow-opening type	Air-to-open and flow-closing type or air-to-close and flow-opening type
			Air supply pressure
			0.14	0.18	0.21	0.25	0.28	0.32	0.35	0.39	0.42	0.46	0.49	0.53
1＂	14 5.6	5.6 7.0	5.6 7.0
＂ 1 1 2	30 12	3.5 7.0	1.6 3.7	4.9 7.0
2＂	50 20	1.8 3.7	0.7 1.6	2.6 5.3	4.2 7.0
3＂	135 54	1.4 3.4	0.62 1.6	2.1 4.8	3.5 5.6
4＂	230 92	0.7 1.6	0.25 0.7	1.1 2.3	1.8 4.0	2.6 5.6	3.4 5.6	3.5 5.6
6＂	500	0.42			0.14 0.14 0.14	0.63 0.63 0.63	1.2 1.2 1.2	1.7 1.7 1.7	2.2 2.2 2.5	2.7 2.7	3.2 3.2	3.5 3.5
6＂	200	1.1			0.42 0.42 0.42	1.5 1.5 1.5	2.7 2.7 2.7	3.7 3.7 3.7	4.8 4.8	5.6 5.6
	850	0.14				0.28 0.28 0.28	0.52 0.52 0.52	0.77 0.77 0.63	1.1 1.1	1.3 1.3	1.5	1.8	2.1
8＂	510	0.28			0.07 0.07 0.07	0.46 0.46 0.46	0.84 0.84 0.84	1.2 1.2 0.96	1.6 1.6	2.0 2.0	2.4	2.8	3.2
	340	0.49			0.14 0.14 0.14	0.77 0.77 0.77	1.4 1.4 1.4	2.0 2.0 1.5	2.6 2.6	3.2 3.2	3.8	4.4	4.9
10＂	1300					0.11 0.11 0.11	0.25 0.25 0.25	0.38 0.38 0.35	0.53 0.53	0.67 0.67	0.77 0.70	0.91	1.1	1.2
	780	1.1				0.21 0.21 0.21	0.42 0.42 0.42	0.63 0.63 0.63	0.84 0.84	1.1 1.1	1.3	1.5	1.7	1.9
	520	0.21				0.35 0.35 0.35	0.7 0.7 0.7	1.1 1.1 0.84	1.3 1.3	1.7 1.7	2	2.3	2.7	3
	1750					0.04 0.04 0.04	0.11 0.11 0.11	0.18 0.18 0.18	0.28 0.28 0.21	0.35 0.35	0.42 0.42	0.49	0.6	0.67
12＂	1050					0.07 0.07 0.07	0.21 0.21 0.21	0.32 0.32 0.32	0.46 0.46	0.56 0.56	0.7	0.77	0.91	1.1
	700	0.07				0.18 0.18 0.18	0.35 0.35 0.35	0.56 0.56 0.56	0.77 0.77	0.91 0.91	1.1 0.90	1.3	1.5	1.8
Note: If the allowable pressure difference exceeds the value in the table, it is recommended to use a piston-type actuator. If the Cv value is greater than 500, it is recommended to use a piston-type actuator. The allowable pressure difference shall not exceed the nominal pressure of the valve.

Accessories
Since the flow characteristic of the FR series pneumatic eccentric rotary control valve is approximately linear, a valve positioner (including an air filter pressure reducer) must be equipped in occasions where control accuracy is required. In addition, auxiliary components such as electro-pneumatic converters, position retaining valves, safety valves, travel switches, and solenoid valves can also be equipped according to process requirements.

The handwheel of the FR series is integrated with the valve, and it can be supplied without special indication when the user places an order.

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Categories	Check Valves
Brand Name:	WEYO
Model Number:	FR
Place of Origin:	China
MOQ:	Negotiable
Price:	Based on oroiect reauirements
Payment Terms:	L/C, T/T
Supply Ability:	5000 units per month for small parts. 1000 units per month for large parts
Delivery Time:	7 - 15 days for small orders, 15 - 30 days for large orders
Packaging Details:	Customized packaging to protect products