Lip seal seat
Flexes under pressure to seal tighter against the disk.
Spring loaded · soft seat
9100 Series
A state of the art soft seat, high flow rate design, and an industry leader for safety, reliability, low maintenance and cost effectiveness. Its fully guided disk and field proven tight lip seal hold a consistent set pressure.
- Set pressure
- 10 to 3,500 psig69 to 24,130 kPag
- Orifices
- C to P Threaded C to K
- Service
- Air, gas, liquid
- Code
- ASME XIIIUV stamped
Tap a point to look insideFive parts that make the 9100 work.
Overview
9100 Series at a glance
The 9100 is manufactured to the requirements of the ASME Boiler and Pressure Vessel Code, Section XIII, for UV stamped applications in air/gas and liquid service. Its soft seat and fully guided disk design outlasts the competition, giving consistent set pressures and a field proven tight lip seal.
A tighter seal reduces leaks and limits product loss, which lifts productivity and safety on site. Every new 9100 is verified and tested in Brisbane before dispatch.
Where it's used
- Specialty gases
- Compressors
- Separators
- Gathering lines
How it works
Watch the valve pop and reseat.
A spring holds the disk on the seat until system pressure reaches set. Then the valve pops to full lift, relieves, and reseats once pressure drops through the blowdown.
ClosedSpring force holds the disk on the lip seal seat. Pressure is below set.
- Closed
- Pop
- Relieving
- Reseated
Tap a step to jump to it in the cutaway.
Animated cutaway for illustration. Blowdown varies by size, service and setting.
Models at a glance
Compare the 9100 range
Ranges from Mercer's published figures. kPag conversions are rounded.
| Threaded | Flanged | |
|---|---|---|
| Service | Air, gas and liquid | Air, gas and liquid |
| Orifices | C to K | C to P |
| Set pressure (psig) | 10 to 3,500 | 10 to 3,500 |
| Set pressure (kPag) | 69 to 24,132 | 69 to 24,132 |
Orifice sizes
Pick an orifice to compare sizes
Circles are drawn to scale by Mercer's actual orifice area. Switch model to see its range.
J
1.430 in²923 mm² actual orifice area, 34.3 mm (1.350 in) bore
Diameters and areas are Mercer's actual orifice sizes from its published model specifications, which run larger than the API 526 letter areas. Relieving capacity also depends on the certified flow coefficient, so confirm sizing with the workshop.
Quote this orifice →Pressure check
Will a 9100 cover your set pressure?
Type your set pressure. If it falls outside the range, we'll point you at the series that covers it.
Enter a set pressure above zero.
Covered
Auto Seat Technology®
What's inside a 9100
The Auto Seat features that do most of the work in this series.
Fully guided disk
Keeps the disk aligned with the nozzle so it seats and seals on every pop.
Non-rising stem
Stops torque from the adjustment screw reaching the disk and seat, extending valve life.
Low spring rates
Pops open more freely without over stressing the spring, for a more accurate set pressure.
Already running 9100s?
Recertify them in Brisbane
- Tested as found, with a report on every valve
- Gas service on gas, liquid service on water
- Back on site ready to install, under the Inland Transport Guarantee
Book a recert →or call the workshop on 07 3265 4888
Documents
Manuals, data sheets and certificates
Everything for the 9100, downloadable from this site.
IOM
Installation and maintenance manual
How to install, operate and maintain the 9100.
Download
Data
Data sheet
Dimensions, orifice areas, materials and pressure ratings.
Download
Cert
Sample verification certificate
The certificate that comes back with every recertified valve.
Download
Warranty
Australian warranty
Mercer Brisbane 1 year and 3 year warranty terms.
View terms →
Other Australian series
Not quite the right valve?
Request a quote
Build your 9100 quote
Four quick steps. We'll come back with price and lead time from Brisbane. Or call 07 3265 4888.