Predictika · Process valve specifications

An AI sales agent's cast steel valve specification, checked before it goes out

An AI sales agent prepares a specification for a cast steel gate, globe or swing check valve from a public technical datasheet, with a pressure class, size, body material, trim and operating conditions. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the datasheet's published limits and returns a verdict, every reason and the figures it computed.

Scope: CRANE cast steel gate, globe and swing check valves (classes 150 to 1500): size range, body and trim temperature limits, WCB pressure rating and gear operator. See everything this validator covers

This validator models specifications for cast steel gate, globe and swing check valves in the public CRANE ChemPharma & Energy cast steel valves datasheet, not just the scenarios shown below.

  • Valve types and classes — gate, globe and swing check valves in pressure classes 150, 300, 600, 900 and 1500, each with the size range the datasheet lists for that type and class.
  • Materials and temperature — eight body materials (WCB, WC6, WC9, C5, C12, LCC, CF8M, CF8) and four trims (X, UF, A, L), each with the maximum temperature the datasheet lists; the operating temperature may not exceed either.
  • Pressure and operator — for carbon steel (WCB) bodies the operating pressure is compared with the datasheet's pressure-temperature rating for the class; a handwheel on a gate or globe valve at or above the size where the datasheet recommends manual or powered gear assistance needs a person to confirm.

Any specification for these valves that touches these rules is in scope — not only the scenarios pictured here. Not covered: prices (Crane does not publish list prices, so this validator produces no price build-up or line-item quote), pressure ratings for body materials other than WCB, tilting disc and stop check valves, class 2500, end connections and pipe schedules, and Crane's other product lines.

The AI sales agentBuilds the valve specification from the conversation and says it is ready.
Predictika validatorChecks every rule at once and returns the verdict, each finding, and the computed figures.

7 scenarios in 3 groups · each group runs from the agent’s first attempt to the outcome · click one to switch

What the agent proposes

The AI sales agent says

Illustrative agent statement. The validator receives the structured request below.

Proposing agent: AI sales agent (scripted)

Before sending, the agent must call Recorded run

Predictika validator


      

        
        
        
      

      
Waiting for the call.

      
    

  

  
  

    
Where rules-based CPQ gets it wrong
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Our assessment of what a typical rules-based CPQ (product rules, price rules and validation rules, as in Salesforce CPQ) does with the same cases. It is a judgment about effort and reliability, not a claim that nothing can be built.

    
What the validator caughtTypical rules-based CPQPredictika
A size range that depends on valve type and classOnly with care
Every type and class pair has its own maximum size, so the rule is a table of fifteen thresholds that has to be maintained by hand.		Type, class and size travel in one request and the size is compared with the right range on every call.
Temperature limits set by both the body and the trimOnly with care
Two separate limits on two different selections; each combination needs its own rule, and a change to either list adds more.		Body, trim and operating temperature are in one request and both limits are checked together.
A pressure rating that falls as temperature risesOnly with workarounds
The allowed pressure depends on class and on a temperature step, so it needs a lookup table of its own, kept in step with the datasheet.		The rating is looked up from class and temperature on every call and compared with the stated pressure.
Every problem returned in one answerOnly with workarounds
Rules tend to fire as the specification is saved or a step is completed, so a rep often fixes one error and meets the next.		All findings come back together, whatever order the choices arrived in.

  

  

    
What this validator catches: findings from its test cases
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Every rule is checked on every call, in any order the choices arrive; one problem never hides another. Blocking findings stop the quote; approval findings need a person to sign off; everything else is computed.

    
1Class 250 is not a pressure class in the catalog; the classes are 150, 300, 600, 900 and 1500.
2A 20 inch valve is outside the catalog size range of 2 to 16 inches for this valve type and class.
3The operating pressure is 201 psi; a Class 150 carbon steel (WCB) valve is rated for 200 psi at the catalog temperature step that covers 400 F.
4A 18 inch valve is outside the catalog size range of 2 to 16 inches for this valve type and class.
5A 9 inch valve is outside the catalog size range of 2 to 8 inches for this valve type and class.
6A 22 inch valve is outside the catalog size range of 2 to 20 inches for this valve type and class.
7A 1 inch valve is outside the catalog size range of 2 to 24 inches for this valve type and class.
8The operating temperature is 850 F; the selected body material is listed to 800 F.
9The operating pressure is 411 psi; a Class 300 carbon steel (WCB) valve is rated for 410 psi at the catalog temperature step that covers 800 F.
10The operating temperature is 1150 F; the selected body material is listed to 1100 F.
11The operating temperature is 1150 F; the selected trim is listed to 1100 F.
12The operating temperature is 500 F; the selected trim is listed to 450 F.
13The operating temperature is 900 F; the selected trim is listed to 850 F.
14The operating temperature is 700 F; the selected body material is listed to 650 F.
15The valve is fitted with a handwheel; the catalog recommends manual or powered gear assistance for this valve type and class from 8 inches, and the size is 8 inches.
16The valve is fitted with a handwheel; the catalog recommends manual or powered gear assistance for this valve type and class from 4 inches, and the size is 4 inches.
17The operating temperature is 1001 F; the selected body material is listed to 1000 F.

  

  

    
Scenarios and results
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The recorded result of the validator for each scenario on this page: the request the AI agent sent, the verdict, and every finding, in the order they appear above.

    
1. Gate valve, hot high-pressure service: A Class 1500 gate valve, 20 inches, with trim A at 600 F and 3,000 psi

    
The agent's request. Please quote a 20 inch Class 1500 cast steel gate valve with a carbon steel (A216 WCB) body and trim A, for 3000 psi at 600 F, fitted with a handwheel. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Size outside the catalog range. A 20 inch valve is outside the catalog size range of 2 to 16 inches for this valve type and class.
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  • Too hot for the trim. The operating temperature is 600 F; the selected trim is listed to 450 F.
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  • Pressure above the WCB rating. The operating pressure is 3000 psi; a Class 1500 carbon steel (WCB) valve is rated for 2840 psi at the catalog temperature step that covers 600 F.
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  • Gear assistance recommended. The valve is fitted with a handwheel; the catalog recommends manual or powered gear assistance for this valve type and class from 4 inches, and the size is 20 inches.
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2. Gate valve, hot high-pressure service: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 16 inch Class 1500 cast steel gate valve with a carbon steel (A216 WCB) body and trim UF, for 2800 psi at 600 F, with a manual or powered gear operator. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Specification summary. Class 1500 gate valve, 16 inches, 600 F at 2800 psi; the catalog size range for this type and class is 2 to 16 inches.
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3. Globe valve for 850 F service: A Class 900 globe valve, 14 inches, in carbon steel at 850 F

    
The agent's request. Please quote a 14 inch Class 900 cast steel globe valve with a carbon steel (A216 WCB) body and trim L, for 1800 psi at 850 F, with a manual or powered gear operator. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Size outside the catalog range. A 14 inch valve is outside the catalog size range of 2 to 12 inches for this valve type and class.
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  • Too hot for the body material. The operating temperature is 850 F; the selected body material is listed to 800 F.
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4. Globe valve for 850 F service: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 12 inch Class 900 cast steel globe valve with a carbon steel (A216 WCB) body and trim L, for 1800 psi at 850 F, with a manual or powered gear operator. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Too hot for the body material. The operating temperature is 850 F; the selected body material is listed to 800 F.
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5. Globe valve for 850 F service: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 12 inch Class 900 cast steel globe valve with a 1-1/4 Cr, 1/2 Mo steel (A217 WC6) body and trim L, for 1800 psi at 850 F, with a manual or powered gear operator. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Specification summary. Class 900 globe valve, 12 inches, 850 F at 1800 psi; the catalog size range for this type and class is 2 to 12 inches.
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6. Swing check valve: A Class 150 swing check valve at 230 psi

    
The agent's request. Please quote a 16 inch Class 150 cast steel swing check valve with a carbon steel (A216 WCB) body and trim X, for 230 psi at 400 F. It is ready to send.

    
Verdict: Blocked.

    
    
      
  • Pressure above the WCB rating. The operating pressure is 230 psi; a Class 150 carbon steel (WCB) valve is rated for 200 psi at the catalog temperature step that covers 400 F.
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7. Swing check valve: The agent resubmits after fixing the errors

    
The agent's request. Please quote a 16 inch Class 300 cast steel swing check valve with a carbon steel (A216 WCB) body and trim X, for 230 psi at 400 F. It is ready to send.

    
Verdict: Allowed.

    
    
      
  • Specification summary. Class 300 swing check valve, 16 inches, 400 F at 230 psi; the catalog size range for this type and class is 2 to 24 inches.
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Narration transcript
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The text of the narrated walkthrough, step by step.

    
    
      
  1. Welcome to a demo of Predictika's Validator. An AI sales agent prepares a specification for a cast steel gate, globe or swing check valve from a public technical datasheet. Before it goes out, the agent sends it to Predictika, which checks it against a declarative model of the datasheet's published limits and returns a verdict, every reason and the figures it computed.
    2. 
      
  2. I will start with the first request by the agent.
    3. 
      
  3. The agent says. Please quote a 20 inch Class 1500 cast steel gate valve. It is ready to send. The rest of the request is on screen.
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  4. Before it goes out, the agent calls the validator.
    5. 
      
  5. Blocked, with three findings and one approval, all in one answer. A 20 inch valve is outside the catalog size range of 2 to 16 inches for this valve type and class. The operating temperature is 600 F; the selected trim is listed to 450 F. The operating pressure is 3000 psi; a Class 1500 carbon steel (WCB) valve is rated for 2840 psi at the catalog temperature step that covers 600 F.
    6. 
      
  6. The validator returned three blocking findings and one approval in one answer. A check that reads one field at a time would pass most of this; it shows only when the choices in the quote are checked against each other.
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  7. What this shows: for a size range that depends on valve type and class, a rules-based CPQ is error-prone for this.
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  8. Now the agent resubmits.
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  9. The corrected request. It changes the size to 16 inches, the trim to UF (hardfaced seating, 13 Cr stem), the operating pressure to 2,800 psi and the operator to gear or powered.
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  10. It calls the validator again.
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  11. This time the validator clears it.
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  12. All four earlier findings are cleared.
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  13. Four problems caught in one call, fixed in one pass, and a clean quote. That is the value of Predictika's validator: catching mistakes before they reach the customer. Now you can try the other scenarios yourself.
    14.