Valve pairs

Products :: Pumping equipment :: Valve pairs

Oilfield downhole equipment manufacturing.

The following standard valve pairs (VP) are produced (the size)

Vаlve size	Designation by API	Dimensions, mm
		dш	d	D
1 1/16	V11-106	15,875	11,89	20,142
1 1/4	V11-125	19,05	14,61	23,317
1 1/2	V11-150	23,8125	17,83	29,667
1 3/4	V11-175	28,575	21,08	35,255
2 1/4	V11-225	34,925	26,57	43,688
2 1/2 ,  2 3/4	V11-250	42,863	32,7	51,054

VP Version

Standard	SS	Stainless steel (density 7,8 g/сm3)
	ST	Stellite (cobalt alloy) (density 8,8 g/cm3)
Special	TC-1	Carbide version (tungsten carbide) (density 14.6 g/cm3)
	TC-2	Carbide version (tungsten carbide on alloy connection: carbostellite) (density 7.7 g/cm3)

Working Surfaces Hardness (HRC)

	Version
	SS	ST	TC-1	TC-2
Seat	52-56	52-56	88	87
Ball	58-65	58-61	90	88

Features of Valve Pairs Versions

Special Versions of VP (ТС-1 and ТС-2)

The VP of special versions are designed for use in the pumps during viscous oil production. The use of special material – tungsten carbide, with a high density (14.6 g/cm³, the density of stainless steel is 7.8 g/cm³) gives an opportunity for the pump to work more effectively, especially with heavy, viscous oils with a high gas factor.

The use of the present VP is cost-effective on account of the interrepair time increase, in some cases on account of additionally produced oil.

The carbostellite version combines the best characteristics of stellite and hard-alloy valve pairs.

Standard Version of VP (ST и SS)

Stellite VP provide an excellent combination of mechanical stability, resistance to attack by corrosive media and hydrogen sulfide corrosion.

The designation of the SS material (the 95Х18 steel) is the parts on which the requirement of high hardness and wearing quality is imposed at temperatures up to 500°C and exposed to moderate aggressive environment. The steel is corrosive, the martensic class. The steel has:

- high resistibility in sea and river water, alkaline solutions with concentration 1…20% and organic substances (mineral oil at 20 – 220°);

- good resistibility in nitric acid and acetic acid;

- satisfactory resistibility in ortho-phosphoric acid;

- bad resistibility in muriatic and sulfuric acids.

Balls and seats made of steels 45Х13, 95Х18 and stellite are widely used and they are suitable for the operation of pumps the service life of which is not more than 150-200 days.

If you have questions contact with our specialists using "Feedback" or by telephone/fax +7 (8312) 95-50-58, +7 (8312) 93-41-30

“The Industrial Subcontracting Centre” within the framework of outsourcing operate with the following technologies: metal working, coverage, hardening, qualification test. Manufacturing of metallic structures, details and spare parts of pumping units and crushing plants. Technical analysis. Wellhead quality and durability inspection.

“The Obukhovskaya Industrial Сompany” supply crushing equipment: jaw and gyratory breakers, cone-type and rotary crushers; belt, chain-linked and apron conveyors; unbalanced-throw and double-impact screens, plate feeders, granulating plants, sizing machine, component and spare parts.
Manufacturing of oil pumping units, deep-well sucker-rod pumps, wellhead, production tree, chokes, flanges, gas-sand anchors.

Oilfield downhole equipment manufacturing and delivery to oil producers.