Parker Instrumentation Updated

Question 1

what are the pressure ratings of Parker’s C-Series check valves (2 ranges)

Answer 1

1/8” - 3/4” is 6,000 psi

1” is 5,000 psi

Question 2

why would someone use instrument grade valves (6 answers)

Answer 2

size, pressure rating, end connection variability, cleanability, leak integrity, complimentary products

Question 3

When considering a selector or diverter valve, what inlet must we derate the pressure rating?

Answer 3

side port, not bottom port

Question 4

what is the pressure rating of the HB Series ball valves (2 answers)

Answer 4

10,000 with PEEK seats

6,000 with PCTFE seats

Question 5

What are the three stem types for Parker’s needle valves

Answer 5

(R) on/off
(K) on/off with soft tip for gas applications
(N) regulating

Question 6

Can you use a rotary plug valve in throttling applications?

Answer 6

Yes

Question 7

What application is a CB Series check valve designed for?

Answer 7

reducing maintenance and performance requirements for dual fuel turbines.

Question 8

What is the major difference between the C-Series and CO-series check valve?

Answer 8

C-Series is general use
CO-Series is good for R&D and micro electronics, essentially applications requiring high integrity leak protection, it carries the only published leak rate of 4x10-9 CC/SEC (with viton seals, standard cubic centimeters per second)

Question 9

Are metering valves designed for on/off applications? Why?

Answer 9

No, the stem will be damaged if bottomed out.

Question 10

Does Parker offer repair kits for their metering valves? Why?

Answer 10

No, the disassembly process is not field friendly, components can be damaged beyond useable condition.

Question 11

Questions to ask when specing a valve? (at least 8)

Answer 11

temperature, end connection size, end connection type, what media, pressure, service, manual or actuated, area classifications.

Question 12

Features of B-Series ball valve?

Answer 12

packing allows for easy inline adjustment, free floating ball design allows for seat wear compensation, microfinished ball ensures leak tight shutoff, applications up to 6,000 psi

Question 13

What is the pressure rating of a B-Series ball valve with PTFE Seats?

Answer 13

1,500 psi

Question 14

What series does the MB-Series replace from Swagelok?

Answer 14

40 and 40T

Question 15

Features of the MB Series Ball valve?

Answer 15

packing nut allows for easy inline maintenance, competes with Swagelok 40 series (millions of installations worldwide), single piece molded PFA packing encapsulates the ball eliminating entrapment areas, applications up to 3,000 psi.

Question 16

Why would someone use the U-Series Needle Valve?

Answer 16

dust seal in the bonnet, use in applications up to 6,000 psi and temps as high as 1,200F with grafoil packing, packing below the threads, it’s meant for severe service applications, non-rotating stem increases service life.

Question 17

What is the purpose of packing below the threads (PBT)?

Answer 17

packing below the threads protects thread lubricants from media, helping prevent galling

Question 18

Why would a client use a CPI Instrumentation fitting? (6 reasons)

Answer 18

easier to install, moly thread lubricant, 3-piece design, suparcase ferrule, tremendous value/performance with scratched tubing, dam of material builds to prevent tube blow out during pressure, seal on tube in front great for high vibration and thermal cycling applications

Question 19

What are the 3 bonnet designs for needle valves?

Answer 19

integral (1-piece), screwed (bonnet screwed in to the body), union (bonnet sit in top of valve body nut torques bonnet into valve, making it very secure).

Question 20

What type of Parker valves would you use for throttling applications? (2)

Answer 20

needle and plug

Question 21

What is the purpose of relief valves?

Answer 21

when upstream pressure exceeds the closing force exerted by the spring the lower stem opens permitting flow through the valve.

Question 22

Plug valve versus ball valve

Answer 22

Plug is economical, compact, throttling, higher Cv value

Ball offers bi-directional flow, higher operating pressures and cylce life, 3-way options

Question 23

5 main reasons to use Tubing over pipe

Answer 23

simple, fewer fittings, less leak paths, less pressure drop, economy of space and weight

Question 24

Why did Parker come out with Suparcase hardening?

Answer 24

to help ensure the ferrule was hard enough to seal on the tube for gas applications.

Question 25

In addition to hardening, how does Suparcase help?

Answer 25

increases corrosion resistance of ASTM type 316 stainless steel, it's proprietary to Parker Hannifin

Question 26

Where is the sealing on both CPI and A-Lok?

Answer 26

CPI the sealing is in the front of the assembly | A-Lok is in the back with the rear ferrule

Question 27

What applications would benefit from using CPI versus Alok?

Answer 27

high vibration, gas sealing, and thermal cycling applications, the unique bowing action of the single ferrule acts as a dampener against the tube seal helping with high vibration stress.

Question 28

Why does the ferrule need to be harder than the tube?

Answer 28

in order to create a good seal, the ferrule must grip the tubing, so if the ferrule is softer or equal to the tubing , the ferrule will not create a leak tight seal.

Question 29

What are three reasons why a customer may find CPI useful compared to ALOK?

Answer 29

safety (reduced chance of error in assembly), fewer components to stock (1 ferrule versus 2 ferrules), sealing point moved to front so performs better in thermal cycling, gas sealing, and high vibration applications.

Question 30

why is it important to understand temperature deration of tubing?

Answer 30

as temperature increases, the integrity of pressure performance diminishes increasing the potential of blowout if spec'd incorrectly.

Question 31

why is it vitally important to ensure the tubing has bottomed out against the fitting body?

Answer 31

safety from blowout and to ensure there's no leak path.

Question 32

When reviewing the tubing pressure versus wall thickness guide, what does the white and gray shaded area represent?

Answer 32

white is acceptable for gas service | gray is unacceptable for gas service

Question 33

once a fitting assembly has been assembled to finger tight, what is the protocols for various sizes to ensure proper assembly?

Answer 33

1/16-3/16 should be tightened 3/4 turn beyond finger tight | 1/4" - 1" should be tightened 1-1/4 turn beyond finger tight

Question 34

when using a gap gauge, what should you know?

Answer 34

if the gauge does NOT fit between the nut and body, the fitting has been properly tightened. If the gauge fits between the nut and body, additional tightening is required.

Question 35

can you use a gap gauge for remakes?

Answer 35

No

Question 36

why would you use a port connector?

Answer 36

to close couple two fittings instead of measuring and cutting a small length of tubing

Question 37

for port connectors, how many turns beyond finger tight for proper assembly?

Answer 37

1/4 turn

Question 38

Why use a plug fitting?

Answer 38

to plug the unused port on a fitting

Question 39

For plugs, how many turns beyond finger tight for proper assembly?

Answer 39

1/4 turn

Question 40

For remakes, how many turns should you go beyond original position?

Answer 40

1/2 a hex flat

Question 41

what are three main reasons fittings could leak?

Answer 41

under tightening, improper tube insertion, damage to tubing.

Question 42

What fitting options do we have available for our customers from Parker?

Answer 42

instrumentation compression (CPI, A-Lok, MPI), high pressure cone & thread, phastite, push-to-connect, pipe fittings, PTFE.

Question 43

What valve options do we have through Parker? (13)

Answer 43

ball, check, needle, relief, gate, globe, metering, plug, proportional, solenoid, ultra high purity, manifold, double block and bleed.