Pneumatic ball valve Raw Sour GasNACE MR0175 / ISO 15156 standards and shall be suitable for Sour Gas service conditions.

The valves shall comply with the requirements for design and operation at explosion- and fire-hazardous
and chemically hazardous industrial facilities.
Mean operating life before failure: not less than 30,000 cycles.
The marking and identification painting of the valves shall comply with GOST R 52760-2007, as well as
other standards not inferior in quality and characteristics, and shall contain the following mandatory
information
The equipment shall be supplied in packaging suitable for transportation and capable of protecting it
against external influences such as mechanical damage, water, dust, etc., in accordance with GOST
26653-90 for transportation and GOST 15150-69 for storage, as well as other standards not inferior in
quality and characteristics.
Raw sour gas: CH₄ – 81.68%; C₂H₆ – 3.66%; C₃H₈ –
0.99%; i-C₄H₁₀ – 0.22%; n-C₄H₁₀ – 0.29%; C₅H₁₂ +
higher hydrocarbons – 0.70%; CO₂ – 0.70%; N₂ –
2.99%; H₂S – 0.91%; H₂O – 7.86%
4. Material Requirements
All pressure-containing parts shall strictly comply with NACE MR0175 / ISO 15156 standards and shall be suitable for Sour Gas service conditions.
Valve Body
Recommended materials:
ASTM A350 LF2
ASTM A216 LCC
Or SS316 Stainless Steel.
Ball
ASTM A182 F51 Duplex Stainless Steel
Or SS316 Stainless Steel
Surface treatment with TCC (Tungsten Carbide Coating) wear-resistant coating.
Pneumatic Actuator
Actuator Type: Single Acting Spring Return Pneumatic Actuator
Fail Action: Fail Close (FC) upon loss of air supply
Emergency Shutdown Time: ≤ 5 s
Instrument Air Pressure: 2.5–3.5 bar
6. Control System
The valve shall be equipped with:
Solenoid valve (24VDC or 220VAC)
Open/Close limit switches
Local and remote feedback signals
All electrical components shall comply with:
Ex d or Ex i explosion-proof protection rating
7. Environmental Requirements
Suitable for outdoor installation.
The external surface shall be coated with:
5-M heavy-duty anti-corrosion coating
The coating system shall meet the requirements for long-term operation in outdoor corrosive environments