SAPAG STEAM SAFETY VALVE SERIES 9100 / SAFETY VALVE SELECTION SIZING The safety valve is defined by its orifice size. The orifice sizes are designated by figures corresponding to orifice areas between 2.85 cm2 / 0,44 sq.in. and 129.3 cm2 / 20 sq.in. Knowing the required flow capacity of the valve at the desired set pressure, the orifice size can be

This specification provides the requirements for subsurface safety valves (SSSVs), and the secondary tools as defined herein necessary to operate the features included within them, including all components that establish tolerances and/or clearances that may affect performance or interchangeability of the SSSV components.

Main Valve Piston Lift Main Valve Piston Lift Pressure 3% Minimum Blowdown Main Valve Action Based on Pilot Style 12 Pop Action Pilot (Series 200) Pop Action Pilot (snap action) Gas or Mixed Phase Service Non flowing pilot design (no hydrates formed) Hydrates are solids that contain water. 13 Series 200 (Normally Closed Position) Dome Dome Pilot

Fig. 3 - PARCOL conventional safety relief valve series 3-5400 The off position of the lifting lever shall be fixed and sealed against misoperation. When no leakage of the discharge fluid is allowed, the movement of the lifting lever is transmitted to the internal side of the cap through a sealing stuffing box.

The most common types of block valves include: Gate valves - wedge/parallel slab/parallel expanding/parallel slide. Ball valves - floating ball/trunnion mounted; metal/soft eats. Butterfly valves - double or triple offset/rubber lined. Plug valves - lubricated balanced/sleeved, Lined/expanding/lift. Diaphragm valves - weir/full flow

Valve Types and Features The three basic functions of valves are: 1. to stop flow, 2. to keep a constant direction of flow, and 3. to regulate the flow rate and pressure. To select the correct

Fig. 3 – PARCOL conventional safety relief valve series 3-5400 The off position of the lifting lever shall be fixed and sealed against misoperation. When no leakage of the discharge fluid is

Flanged Safety Relief Valves. Type 442 DIN. Plain lever H3. Open bonnet. Conventional design. Type 441 DIN. Packed lever H4. Closed bonnet.

There are four basic types of flow control elements employed in valve design. 1. Move a disc, or plug into or against an orifice (for example, globe or needle type valve). 2. Slide a flat, cylindrical, or spherical surface across an orifice (for example, gate and plug valves). 3.

The company offers safety and relief valves with brass, bronze, cast iron, carbon steel and stainless steel body construction. Available in inlet sizes from 1⁄4" through 6", Conbraco valves are certified for steam, air/gas and liquid service, with set pressures up to 900 psi.

In piston type balanced valve, the back pressure P2 downwards is equalized by the pressure on the piston which has the same area as the nozzle seat. Page 6