Differential pressure control valve - Revision history

Designing Buildings at 09:00, 27 June 2023

2023-06-27T09:00:32Z

← Older revision		Revision as of 09:00, 27 June 2023
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	[https://www.bsria.com/uk/product/qB4KzD/test_method_for_heat_interface_units_bts_22015_a15d25e1/ Test Method for Heat Interface Units (BTS 2/2015)], written by Colin Judd, and published by BSRIA in December 2015 and amended in June 2016, states: ‘A differential pressure control valve (DPCV) operates to maintain a constant differential pressure between two points in a heating or cooling circuit that is, within limits, independent of the supplied differential pressure. A DPCV is normally used in conjunction with a regulating valve and a flow control valve.’		[https://www.bsria.com/uk/product/qB4KzD/test_method_for_heat_interface_units_bts_22015_a15d25e1/ Test Method for Heat Interface Units (BTS 2/2015)], written by Colin Judd, and published by BSRIA in December 2015 and amended in June 2016, states: ‘A differential pressure control valve (DPCV) operates to maintain a constant differential pressure between two points in a heating or cooling circuit that is, within limits, independent of the supplied differential pressure. A DPCV is normally used in conjunction with a regulating valve and a flow control valve.’

−	[https://www.bsria.com/uk/product/NrM42B/hydronic_systems_design_set_of_2_guides_hsd2_a15d25e1/ Energy Efficient Pumping Systems, a design guide (BG 12/2011)], written by Chris Parsloe and published by BSRIA in 2011, states: ‘A DPCV is a self-acting valve that acts in response to changes in pressure differential between its inlet port and a position somewhere upstream in the pipework system. These two pressures are transmitted to either side of a flexible diaphragm inside the valve via small capillary tubes. As the diaphragm flexes in response to the changing pressure differential, it causes the valve plug to move thereby varying the opening through the valve. The effect is to maintain a constant pressure differential between the inlet to the valve and the upstream point to which the capillary tube is attached. The pressure setting can be varied, but once set, the action of the valve will hold it constant regardless of changes in the resistance of the circuit and regardless of changes in the available pump pressure.	+	[https://www.bsria.com/uk/product/NrM42B/hydronic_systems_design_set_of_2_guides_hsd2_a15d25e1/ Energy Efficient Pumping Systems, a design guide (BG 12/2011)], written by Chris Parsloe and published by BSRIA in 2011, states: ‘A DPCV is a self-acting valve that acts in response to changes in pressure differential between its inlet port and a position somewhere upstream in the pipework system. These two pressures are transmitted to either side of a flexible diaphragm inside the valve via small capillary tubes. As the diaphragm flexes in response to the changing pressure differential, it causes the valve plug to move thereby varying the opening through the valve. The effect is to maintain a constant pressure differential between the inlet to the valve and the upstream point to which the capillary tube is attached. The pressure setting can be varied, but once set, the action of the valve will hold it constant regardless of changes in the resistance of the circuit and regardless of changes in the available pump pressure.'
		+
		+	[https://www.bsria.com/uk/product/NrM42B/hydronic_systems_design_set_of_2_guides_hsd2_a15d25e1/ Selection of Control Valves in Variable Flow Systems] (BG 51/2014) written by Chris Parsloe and published by BSRIA in June 2014, defines a differential pressure control valve (DPCV) as: ‘..a self-acting valve that maintains a constant pressure differential between two points (for example, across the flow and return pipes in a pipework branch). The controlled pressure differential can be varied but, once set (and provided the valve is operating within its recommended range) the action of the valve will hold it relatively constant regardless of changes in the controlled circuit and regardless of flow and pressure changes in the system to which the controlled circuit is connected. DPCVs are typically used in conjunction with branches serving room terminal devices controlled by 2PVs or TRVs. The DPCV protects the control valve from fluctuating pressures, thus maintaining control valve authority and ensures the 2PVs / TRVs do not need to close against excessive pressure differentials.’

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

Designing Buildings at 08:26, 26 May 2023

2023-05-26T08:26:28Z

← Older revision		Revision as of 08:26, 26 May 2023
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	[https://www.bsria.com/uk/product/qB4KzD/test_method_for_heat_interface_units_bts_22015_a15d25e1/ Test Method for Heat Interface Units (BTS 2/2015)], written by Colin Judd, and published by BSRIA in December 2015 and amended in June 2016, states: ‘A differential pressure control valve (DPCV) operates to maintain a constant differential pressure between two points in a heating or cooling circuit that is, within limits, independent of the supplied differential pressure. A DPCV is normally used in conjunction with a regulating valve and a flow control valve.’		[https://www.bsria.com/uk/product/qB4KzD/test_method_for_heat_interface_units_bts_22015_a15d25e1/ Test Method for Heat Interface Units (BTS 2/2015)], written by Colin Judd, and published by BSRIA in December 2015 and amended in June 2016, states: ‘A differential pressure control valve (DPCV) operates to maintain a constant differential pressure between two points in a heating or cooling circuit that is, within limits, independent of the supplied differential pressure. A DPCV is normally used in conjunction with a regulating valve and a flow control valve.’
		+
		+	[https://www.bsria.com/uk/product/NrM42B/hydronic_systems_design_set_of_2_guides_hsd2_a15d25e1/ Energy Efficient Pumping Systems, a design guide (BG 12/2011)], written by Chris Parsloe and published by BSRIA in 2011, states: ‘A DPCV is a self-acting valve that acts in response to changes in pressure differential between its inlet port and a position somewhere upstream in the pipework system. These two pressures are transmitted to either side of a flexible diaphragm inside the valve via small capillary tubes. As the diaphragm flexes in response to the changing pressure differential, it causes the valve plug to move thereby varying the opening through the valve. The effect is to maintain a constant pressure differential between the inlet to the valve and the upstream point to which the capillary tube is attached. The pressure setting can be varied, but once set, the action of the valve will hold it constant regardless of changes in the resistance of the circuit and regardless of changes in the available pump pressure.

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

−	= Related articles on Designing Buildings ~~Wiki~~ =	+	= Related articles on Designing Buildings =

	* Actuator.		* Actuator.

Designing Buildings at 08:26, 8 July 2022

2022-07-08T08:26:37Z

← Older revision		Revision as of 08:26, 8 July 2022
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	[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017)], by David Bleicher, published by BSRIA in 2017, suggests that differential pressure control valves (DPCVs): ‘…are installed on variable flow systems to ensure that the differential pressure across a two-port valve does not exceed a set limit. This in turn limits the flow to a set value in the sub-branch, maintaining the control authority of the two-port valve.’		[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017)], by David Bleicher, published by BSRIA in 2017, suggests that differential pressure control valves (DPCVs): ‘…are installed on variable flow systems to ensure that the differential pressure across a two-port valve does not exceed a set limit. This in turn limits the flow to a set value in the sub-branch, maintaining the control authority of the two-port valve.’
		+
		+	[https://www.bsria.com/uk/product/qB4KzD/test_method_for_heat_interface_units_bts_22015_a15d25e1/ Test Method for Heat Interface Units (BTS 2/2015)], written by Colin Judd, and published by BSRIA in December 2015 and amended in June 2016, states: ‘A differential pressure control valve (DPCV) operates to maintain a constant differential pressure between two points in a heating or cooling circuit that is, within limits, independent of the supplied differential pressure. A DPCV is normally used in conjunction with a regulating valve and a flow control valve.’

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

Designing Buildings at 10:43, 9 July 2021

2021-07-09T10:43:26Z

← Older revision		Revision as of 10:43, 9 July 2021
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	* Pipework.		* Pipework.
	* Pressure independent control valves.		* Pressure independent control valves.
		+	* Pressure-relief valve.
	* Radiator.		* Radiator.
	* Tap.		* Tap.

Designing Buildings at 07:28, 29 June 2021

2021-06-29T07:28:17Z

← Older revision		Revision as of 07:28, 29 June 2021
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	[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in November 2019, defines a differential pressure control valve (DPCV) as: ‘A valve that operates to maintain constant differential pressure between two points that is, within limits, independent of the supplied differential pressure. The valve may operate mechanically or electronically.’		[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in November 2019, defines a differential pressure control valve (DPCV) as: ‘A valve that operates to maintain constant differential pressure between two points that is, within limits, independent of the supplied differential pressure. The valve may operate mechanically or electronically.’
		+
		+	[https://www.bsria.com/uk/product/oBKRqD/illustrated_guide_to_mechanical_building_services_3rd_edition_bg_312017_a15d25e1/ The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017)], by David Bleicher, published by BSRIA in 2017, suggests that differential pressure control valves (DPCVs): ‘…are installed on variable flow systems to ensure that the differential pressure across a two-port valve does not exceed a set limit. This in turn limits the flow to a set value in the sub-branch, maintaining the control authority of the two-port valve.’

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

Designing Buildings at 10:19, 15 April 2021

2021-04-15T10:19:19Z

← Older revision		Revision as of 10:19, 15 April 2021
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−	[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in ~~December~~ 2019, defines a differential pressure control valve (DPCV) as: ‘A valve that operates to maintain constant differential pressure between two points that is, within limits, independent of the supplied differential pressure. The valve may operate mechanically or electronically.’	+	[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in November 2019, defines a differential pressure control valve (DPCV) as: ‘A valve that operates to maintain constant differential pressure between two points that is, within limits, independent of the supplied differential pressure. The valve may operate mechanically or electronically.’

	--[[User:BSRIA\|BSRIA]]		--[[User:BSRIA\|BSRIA]]

Designing Buildings at 09:44, 14 April 2021

2021-04-14T09:44:24Z

← Older revision		Revision as of 09:44, 14 April 2021
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	* Actuator.		* Actuator.
		+	* BSRIA.
	* BSRIA articles on Designing Buildings Wiki.		* BSRIA articles on Designing Buildings Wiki.
	* BSRIA launches updated Valve Test Standard.		* BSRIA launches updated Valve Test Standard.

Designing Buildings at 09:19, 14 April 2021

2021-04-14T09:19:09Z

← Older revision		Revision as of 09:19, 14 April 2021
Line 9:		Line 9:
	* BSRIA launches updated Valve Test Standard.		* BSRIA launches updated Valve Test Standard.
	* BSRIA publishes new edition of BG29.		* BSRIA publishes new edition of BG29.
		+	* Flow characteristic.
	* Pipework.		* Pipework.
−	* Pressure ~~Independent Control Valves~~.	+	* Pressure independent control valves.
	* Radiator.		* Radiator.
	* Tap.		* Tap.

Designing Buildings: Created page with "[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in December 2019, d..."

2021-04-14T09:18:28Z

Created page with "[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in December 2019, d..."

New page

[https://www.bsria.com/uk/product/BKMxLn/test_method_for_picvs_and_dpcvs_bts_12019_a15d25e1/ Test Method for PICVs and DPCVs (BTS 1/2019)], published by BSRIA in December 2019, defines a differential pressure control valve (DPCV) as: ‘A valve that operates to maintain constant differential pressure between two points that is, within limits, independent of the supplied differential pressure. The valve may operate mechanically or electronically.’

--[[User:BSRIA|BSRIA]]

= Related articles on Designing Buildings Wiki =

* Actuator.
* BSRIA articles on Designing Buildings Wiki.
* BSRIA launches updated Valve Test Standard.
* BSRIA publishes new edition of BG29.
* Pipework.
* Pressure Independent Control Valves.
* Radiator.
* Tap.
* Valves.
* What makes a good PICV?

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