Saigao offers a full range of valves for drilling and production operations. Gate valves are designed and manufactured in accordance with API 6A latest edition PSL 1-4 while the robust, simple and reliable gate and seat design promotes ease of service with in-line maintenance.

Features include positive metal-to-metal sealing (gate-to-seat and seat-to-body), and stem packing that is chemically inert using spring energising rings which require no adjustment or plastic injection.

Stem packing can be replaced while the valve is under pressure and comes in API material classes AA through HH. Material for hydrogen sulfide and carbon dioxide service lies in accordance with NACE MR-01-175 latest edition. All valves are performance tested to PR2, with temperature ratings K through X up to 177°C (350°F).

Different Types Of Valves Used In Oil And Gas Industry

  • Gate Valve

    A slab gate valve is a sliding valve in which the closing members are parallel rams. The closing member may be a single shutter or a double shutter with a distracting mechanism therebetween.

  • Choke Valve

    Choke valve is a valve that controls the flow of a fluid by changing a throttle section or a throttle length. The choke valve and the check valve are connected in parallel to form a one-way choke valve.

  • Check Valve

    A check valve is a valve in which the opening and closing member is a circular flap and acts on its own weight and medium pressure to block the flow of the medium.

  • Ball Valve and Plug Valve

    The ball of the ball valve is floating. Under the action of the medium pressure, the ball can generate a certain displacement and press on the sealing surface at the outlet end to ensure the sealing of the outlet end.

  • Valve Actuator

    Valve actuators are an essential part of an automated control system. Its function is to accept the control signal sent by the controller and change the size of the controlled medium to maintain the controlled variable at the required value or within a certain range.


Key Features of Valve

  • Pressures up to 15,000 PSI for various API valve sizes

  • Metal-to-metal seals: Seals are stable, thermally insensitive and environmentally resistant; Utilised in the gate/seat, body/bonnet and stem/bonnet backseat

  • Selective backseat: Provides unparalleled safety during venting, lubrication and stem packing replacement; Allows stem packing replacement without removing valve from service

  • Slab gate: Assures smooth operation during extreme thermal cycles

  • Floating seats: Allows bi-directional use

  • Threaded packing gland: Transfers stem packing loads to the bonnet, protecting the bearing assemblies

  • No body penetration

  • Non-rising stem

  • Stem shear pin

  • In-line repairability

Valve Application

Today, people can find many types of valves in the market. Among them, the most typical manual valves will be the ones used in steam systems such as gate valve choke valve, check value and ball valve. 

Valves are now widely applied in petrochemical, chemical production, thermoelectric industry, natural gas pipeline, coal chemical metallurgy, environmental protection transformation, food and medicine, municipal water affairs and real estate construction.


Contact Us
+86 18653457231
Zhongrun Century Center, No 12111,Jingshi Road, Lixia District, Jinan City, Shandong Province. P.R. China