The flow control valve type 2 FRM is a 2-way flow control valve. The factory focuses on the practicality of the products while strictly controlling the quality of the products. It aims to supply high-quality hydraulic flow valves that customers can afford.Huade® flow valves 2FRM 6 are more advanced in technology due to introducing the cutting-edge technology. Product packaging can be customized, such as wooden box packaging, plastic packaging and standard carton packaging.
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Pressure fluid |
Mineral oil(for NBR seal) or Phosphate ester(for FPM seal) |
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Pressure fluid temperature range(℃) |
-30 to +80 |
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Viscosity range(mm ²/s) |
10 to 800 |
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Flow qv max (L/min) |
1.5 |
3.0 |
6.0 |
10.0 |
16.0 |
25.0 |
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Flow qv min to10MPa (L/min) |
0.015 |
0.015 |
0.025 |
0.05 |
0.07 |
0.1 |
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Flow qv min to 31.5MPa (L/min) |
0.025 |
0.025 |
0.025 |
0.05 |
0.07 |
0.1 |
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Pressure difference ∆p for free return flow B → A (MPa) |
0.1 |
0.12 |
0.17 |
0.25 |
0.38 |
0.66 |
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Minimum pressure difference (MPa) |
0.6 to 1.2 |
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Pressure stability up to ∆p = 31.5 MPa (%) |
士2 (Qmax) |
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Maximum operating pressure at port A (MPa) |
to 31.5 |
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Contamination (μm) |
25 (Q<5L/min) 10 (Q<0.5L/min) |
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Weight (kg) |
approx 1.3 |
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Features:
▶ External closing of the pressure compensator, optional
▶ Check valve, optional
▶ Rotary knob with scale
▶ Lockable.optional
1) When used in conjunction with a rectifier plate up to 21 MPa
Application:
Flow control valve 2FRM 6 is used for maintaining a constant flow, independent of pressure and temperature.
General:
2-way flow control valve 2FRM 6 basically comprises of housing(1), rotary knob(2), orifice (3), pressure compensator (4) and an optional check valve.
Flow control valve type 2FRM 6 B.._20B/M
(without external closing, without check valve)
Flow from port A to B is throttled at throttle position (5). The throttle cross-section is varied by turning rotary knob (2).In order to keep the flow constant, independent of pressure, a
pressure compensator (4) is fitted in port B downstream of the throttle position(5). The compression spring (6) presses orifice(3) and pressure compensator (4) outwards against their respective stops and thus keeps pressure compensator(4) in the open position when there is no flow through the valve. When fluid flows through the valve, the pressure acting in port A applies a force to pressure compensator (4) via orifice (7). The pressure compensator (4) moves into the compensating position until the forces balance. If the pressure in port A rises, pressure compensator (4) moves in the closing direction, until a balance of forces is once more attained. Due to this continuous compensating action of the pressure compensator, a constant flow is obtained. In order to control a flow through the valve in both directions, a rectifier sandwich plate type Z4S 6 may be fitted below this flow control valve.
Structure of Flow Control Valve 2FRM 6-20B/...M...
Type 2FRM 6A..-20B/..R
The function of this valve is basically the same as that of valve type 2FRM 6 B..-20B/..M
However, this type of flow control valve is provided with an external port permitting the pressure compensator (4) to be connected to via port P(11). The external pressure acting in port P(11) via orifice (10)holds pressure compensator (4) closed against the force of compression spring (6). When the connected directional valve (9) is actuated to permit flow from P to B,closed loop control is achieved as with type 2 FRM 6 B. Thus a jump on start-up is avoided.
This version with external closing of the compensator may only be used for meter-in control.
Free return flow from port B to A is via check valve(8).
Structure of Flow Control Valve 2FRM 6A..-20B/..R
Application Examples
Symbol of 2-way flow control valve 2FRM 6
Address
No. 27, Yangsha Road, Huilong Town, Qidong City, Jiangsu Province, China
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