Ball reverse-flow valve

BALL REVERSE-FLOW VALVES FROM POLYMER COMPOSITE MATERIALS ТS 28.14.11-044-34724672-2022

Reverse-flow valves are designed for installation as protective pipeline valves for shutting off and opening the return flow of the operating media in the pipeline depending on the requirements of the technological process (open-closed cycle) during transportation of various media, including aggressive chemical, abrasive as well as oil and gas products. Reverse-flow valves are produced in accordance with technological documentation and production technology of Constanta-2 LLC».

Reverse-flow valves can be applied:

in hydraulic drives with closed circulation of working fluid as make-up valves;

in hydraulic drives consisting of several pumps for exclusion of interference during their simultaneous operation;

in filtration units installed in reversible hydraulic lines in order to ensure fluid flow through the filter in one direction;

in hydraulic lines requiring unidirectional fluid movement.

Дисковый обратный клапан в разобранном состоянии

Disassembled ball reverse-flow valve

The composite solution provides low valve weight, guarantees high chemical resistance of the valve, excellent performance properties as well as a lifetime preserved appearance of the shut-off unit. These qualities are determined by the features and advantages of composite polymer materials, which are increasingly replacing metals in new designs of equipment and assemblies. For example, composites based on ultra-resistant plastics are used for the manufacture of the body and disc, providing high abrasion resistance, combined with universal chemical tolerance, which makes the composite solution more attractive for use than the option of using a metal body and disc. The non-metallic reverse-flow valve is the result of a synthesis of the best available technologies in the processing of polymer and composite materials.

The developed composite reverse-flow valves are designed to close the return flow of the working medium of pipelines for pumping various media, including aggressive chemical, abrasive as well as oil and gas products. In addition, the universal chemical resistance of composites used for the production of reverse-flow valves and high inertness of these materials allow to recommend this version of reverse-flow valves for food and biological media as well.

Ball reverse-flow valve drawing

DN, mm	Overall and connecting dimensions, mm					Weight, kg max *
DN, mm	D, mm	L, mm	A, mm	a, mm	n, mm	Weight, kg max *
20	105	59	75	14	4	0,7
25	115	70	85	14	4	1,1
32	135	98	100	18	4	1,5
40	145	112	110	18	4	1,8
50	160	134	125	18	4	2,4
80	195	156	160	18	8	4,3
100	230	190	190	22	8	7,1

Installation guidelines

Installation on steel pipelines

Installation on plastic pipelines

Brief description of the reverse-flow valve from polymer composite materials produced Constanta-2 LLC:

Description	Value
Service life:	minimum 5 years
Resource:	minimum 400000 cycles
Pressure PN:	from 0.6 to 1.6 MPa
Operating media temperature	from -50°С to + 150°С
Ambient temperature	from -70°С to +50°С
Operating conditions	NF 2; 2.1 in accordance with GOST 15150-69
Body material:	composite on the basis of thermosetting and thermoplastic resins Konstaftor-G, Konstaftor-1000P
Leakage class:	А in accordance with GOST R 54808-2011
Connection of reverse-flow valve to pipeline	flange, interflange
Flange connection dimensions	in accordance with GOST 33259-2015
Direction of media flow	unilateral
Operating media:	petroleum products; chemically active liquids (acidic and alkaline with and without mechanical inclusions); domestic, industrial and sea water; steam; food and biological media; hydro- and pneumatic pulses with particle size up to 2 mm.