Pressure regulator with flow limiter - RCQoB, RCQoB

Self-acting pressure regulators with flow limiter type RCQoB are designed to control set-up differential pressure in installations. Self-acting pressure regulators with flow limiter are suitable for steam, non inflammable vapors and gases and neutral liquids. Adjust range of set pressure is depending on the actuator: 0,2-1,6 ; 1-2,8 ; 1- 3,5 or 2,5-7 bar. The regualtor is easy to set by an adjuster at any time. The regualtors are capable of operating in temperature range from 0 to +180°C. (with condensation chamber, if necessary)

Description:

• High quality of regulation.
• Does not require conservation.
• requiring no external power source.

Construction:

For ensuring stable regulation at high differential pressures, the valve-plug (4) is balanced (5). The regulator consisting of two units:
- the valve: valve body (1), flow limiter(2), valve-seat (3), valve-plug (4), balanced plug (5), valve-stem (6);
- the actuator: impulse pipe (7), actuator discs and diaphragm (8), spring (9), actuator-stem (10), adjusting nut (11), actuator-body (12).

Principle of operation:

Medium enters to the valve chamber (A) as indicated by the arrow. The limiter-plug (2) determine size of the gap between the valve-chamber A and B. Higher pressure pass through the impulse pipe (7) to the actuator chamber (C). Pressure value in the chamber (B) is transmitted by holes in valve-plug (4) to the chamber (D). Changes of pressure between the chamber B and pressure in the chamber C, creates a force which moves the valve-plug (4). When downstream pressusre overcomes the set point of the spring, the valve-plug (4) closes to moment when pressure between the chamber C and D will be equal to spring set point (9). The value of pressure difference is adjust by nut (11). Normally the valve-plug (3) is open.

Installation:

Install the regulator with the actuator suspended downwards. For ensuring good work the regulator should be protect by the filter or the magnetic strainer. Install pipelines horizontally. The direction of medium flow have to correspond with the arrow on the valve body.

Technical data:

Series			RCQoB (flanged)
Diameter DN			15	20	25	32	40	50
Flow factor Kvs			3,2	5	8	12,5	20	32
Pressure PN			25 bar
Water flow m3/h for pressure drop	0,2	Qmin	0,15	0,2	0,4	0,6	1,0	1,6
		QMax.	1,3	2,0	3,2	5,0	8,0	13
	0,5	Qmin	0,3	0,5	0,8	1,2	2,0	3,0
		QMax.	2,3	3,5	5,6	8,8	14	23
Adjust range	Dm=240		-			0,2-1,6; 1-2,8 bar
	Dm=160		0,2-1,6; 1-3,5 bar			-
Max. pressure on the valve			12 bar
Max. temperature			180°C
Max. pressure in the actuator chamber			20 bar

flangeds connectors PN25, PN ISO 7005-1

Series			RCQoBm
Diameter DN			15	20	25
Flow factor Kvs			3,2	4,5	6,3
Pressure PN			16 bar
Water flow m3/h for pressure drop	0,2	Qmin	0,15	0,2	0,3
		QMax.	1,3	1,8	2,6
	0,5	Qmin	0,3	0,4	0,6
		QMax.	2,3	3,2	4,5
Adjust range Dm=160			0,2-1,6; 1-3,5 bar
Max. pressure on the valve			12 bar
Max. temperature			150°C
Max. pressure in the actuator chamber			16 bar

Dimensions [mm]:

Pressure regulator with flow limiter RCQoB flanged	Pressure regulator with flow limiter RCQoB screwed

DN	15	20	25	32	40	50
H1	76,5	82,5	82,5	94	102	110
H2	63	66	66	-	-	-
H1Max.	336	344	347	360	362	384
H2Max.	318	344	333	-	-	-
L1	130	150	160	180	200	230
L2	75	80	85	-	-	-

Value ranges:

Indicate value range	20	50	20	50
Adjust range Δ p [bar]	0,2	0,5	0,2	0,5
actuator series	Dm=160		Dm=240