Bleed valves - RCRUB, RCRUBm

Self-acting bleed regualtors type RCRUB are designed to control constant pressure in installations. Self-acting bleed valves are suitable for steam, non inflammable vapors and gases and neutral liquids. Application of this regulator is heating, industrial and power installations. 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 regulators are capable of operating in temperature range from 0 to +180°C (with condensation chamber, if necessary).

Description:

• The valve opens when pressure is rising.
• Excellent control of the process over high differential pressures.
• Does not require conservation.
• requiring no external power source.

Construction:

For ensuring stable regulation at high differential pressures, the valve-plug (3) is balanced (4). The regulator consisting of two connected components:
- executing unit (valve): valve-body (1), valve-seat (2), valve-plug (3), balanced unit (4), valve-stem (5);
- regulating unit (actuator): impulse pipes (6), actuator discs and diaphragm (7), springs (8), actuator-stem (9), adjusting nut (10), actuator-body (11).

Priciple of operation:

Medium flows to valve chamber (A). Control signal pass through the impulse pipe (6) to the actuator chamber (B). The actuator chamber (C) is connected with atmosphere. Size of the gap between the valve-seat (2) and the valve-plug (3) depends on the constant difference pressure between chamber B and C. When control pressusre overcomes the set point, the valve-plug (3) opens to the moment when pressure difference between the chamber B and C will be equal to the adjusted pressure set point. Pressure value is adjusted by adjustment 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		RCRUB (flanged)
Diameter DN		15	20	25	32	40	50
Flow factor Kvs		3,2	5	8	12,5	20	32
Pressure PN		25 bar
Adjust range	Dm=240	-			0,2-1,6; 1-2,8 bar
	Dm=160	0,2-1,6; 1-3,5 bar			-
		2,5-7 bar
Max. pressure diference		12 bar
Max. temprature		180°C
Max. pressure in the actuator chamber		20 bar

flanged connectors PN25, PN ISO 7005-1

series	RCRUBm (screwed)
Diameter DN	15	20	25
Flow factor Kvs	3,2	4,5	6,3
Pressure PN	16 bar
Adjust range Dm=160	0,2-1,6; 1-3,5; 2,5-7 bar
Max. pressure diference	12 bar
Max. temprature	150°C
Max. pressure in the actuator chamber	16 bar

Dimensions [mm]:

Pressure difference - bleed valves RCRUB flanged	Pressure difference - bleed valves RCRUBm screwed

DN	15	20	25	32	40	50
H1	47,5	52,5	57,5	70	75	82,5
H2	28	31	33	-	-	-
H1max	336	344	347	360	362	384
H2max	318	344	333	-	-	-
L1	130	150	160	180	200	230
L2	75	80	85	-	-	-

Values range

Indicate value range	16	35	70	16	28
adjust rangeΔp [bar]	0,2...1,6	1...3,5	2,5...7	0,2...1,6	1...2,8
Actuator series	Dm=160			Dm=240