PERAR production includes Ball Valves in sizes from 1/2″ to 60″, ANSI classes 150lbs to 2500lbs API6D & API6A and API 2000 to API 20000 in Carbon Steel, Stainless Steel, Duplex Steel, Super Duplex Steel, Alloy Steel, Incoloy-Monel, 6Mo, Titanium, etc. The construction available are Floating Type, Trunnion Mounted Side Entry, Trunnion Mounted Top Entry, Metal Seated, Sub-sea and Cryogenic, Bolted and Fully Welded Body.
Perar API Spec. 6D/BS 5351 Floating Ball Valves, ANSI B16.5 RF flanges ends, 2/3 pieces split body, forged steel body, side entry, anti-static device to BS 5351 anti-blow out proof stem, fire safe design to BS 6755 part 2, full or reduce bore, lever or gear operated. Perar Bare stock Floating Ball Valves, ANSI B.2.1 two pieces screwed body construction, side entry, class 600/800, 3000, 6000, anti-blow out stem, anti-static device, seat supported ball, NPT ends or socket weld ends according to ANSI B16.11, fire safe design, zinc plated body.
Side Entry Ball Valves
Perar Compact Ball Valves are designed according to API6A to combine a compact design with robustness and reliable performances. The valves do not rely on lubricant or grease to assist sealing between the ball and seat also when metal-to-metal sealing is used. The valve design is based on trunnion mounted or support plate configuration in order to get the operating torque as lower as possible.
Side Entry Ball Valves
API spec 6D Ball Valves Trunnion supported ball, forged steel, 3 pieces split body side entry, metal to metal or soft seated sealing design self relieving spring loaded seats or double piston effect sealing system, anti-static device, anti-blow-out proof stem double block and bleed or block and bleed, venting and drain fittings, self lubricating stem and trunnion bearings to assure low operating torque throughout entire valve life, fire safe design to BS 6755 parts 2.
Fully Welded Body
Side Entry Ball Valves
API spec 6D Ball Valves, Trunnion supported ball, forged steel, welded body construction, double piston seats sealing system, anti-static device, anti-blow out proof stem, block and bleed, vent and drain fittings, self lubricating stem and trunnion bearings to assure low operating torque throughout entire valve life, fire safe design to BS 6755 parts 2 or API 6FA or API 607. Emergency sealing system at stem and seats area, if required. Safety relieve valve in case of cavity over pressure (suggested only with Liquid Hydrocarbon).
Top Entry Body
API spec 6D Ball Valves Trunnion supported ball, Top Entry design, cast body, bolted bonnet, metal to metal or soft seated sealing design, self relieving spring loaded seats or double piston effect sealing system, anti-static device, anti blow-out proof stem, double block and bleed or block and bleed , vent and drain fittings, self lubricating stem and trunnion bearings to assure low operating torque throughout entire valve life, fire safe design to BS 6755 parts 2. Some of these Top Entry valves are installed in vertical position, have been supplied with internal sleeves to allow the line to be flushed without damaging the valve seals while some of them are metal seated.
& Swing Check Valves
Our engineers have developed a comprehensive range of subsea valves, operators and hydraulic actuators to deliver complete tailor made packages meeting the highest subsea specifications. With a dedicated Subsea Division, internal machining, cladding, structural welding or hyperbaric testing capabilities, we are uniquely prepared to execute projects efficiently and safely, bringing you decades of subsea experience and the expertise you need to develop the most challenging fields.
The Subsea ball valves are actuated by Perar quarter-turn hydraulic actuator or gearbox as requested.They are designed to API 17D for deep water application with hydraulic supply pressure up to 5000 psi as per customer or project requirements. The core mechanism of the actuator can be Rack & Pinion or Helical Spline. They can be equipped with mechanical override intervention mechanism and can be diver or ROV retrievable. Subsea quarter-turn gearboxes operating Ball or Swing Check valves are designed to API 17D for deep water application with ROV interface as per customer or project requirements. Subsea gate valves come in through conduit slab or double expanding type and are tailored according to API 6DSS, API 6A, API 17D with the addition of customer and project requirements. Subsea linear hydraulic actuators are designed to API 17D for deep water application with hydraulic supply pressure up to 5000 psi as per customer or project requirements. All models can be either double acting (DA) or single acting spring return (FSC or FSO).
Perar has specialised in Low Temperature and Cryogenic service to the extreme temperature of minus 196 Deg C, in accordance to the most stringent specifications. Perar Ball Valves in cryogenic service are supplied with extended bonnet with a sufficient gas column length (vapour space) to keep the stem seals exposed only to vapour and not the cold liquid to ensure functional integrity. Suitable seals are selected considering the customer’s process indication. PTFE lip seal spring energised or KEL-F are commonly used.
In the three way Ball Valves the ball of trunnion mounted configuration is supported by bearing plates hold by the end adaptors. In such a way the pressure loads are transferred to the valve body granting a smooth rotation of the ball with low torque levels and reduced seat seal wear.PERAR Trunnion Mounted Bolted Body Side‐Entry Ball Valves represent the basic design standard. They are manufactured in a wide range of sizes and pressure classes typically from forgings.