Dixon
20" PAF 406-98 Tank Truck Manhole Assembly
- SKU:
- NLBETPPVL720BXB
- Availability:
- Limited quantity available.
- Weight:
- 31.00 LBS
Description
PPVL720BXB 20" PAF 406-98 Tank Truck Manhole Assembly
The PPVL720BXB 20" PAF 406-98 Tank Truck Manhole Assembly is designed for DOT 406 and MC306 cargo tank applications requiring secure tank access and integrated pressure relief performance.
This clamp ring style manhole assembly features a PAF 406-98 surge suppression pressure relief valve, integral 10" reclosing pressure relief valve, quick-open inspection hatch, and secondary safety catch. The supplied product information identifies certification to 49CFR178.345-5 and a test pressure rating of 36 PSIG.
Product Highlights
- Model: PPVL720BXB
- 20" clamp ring style tank truck manhole assembly
- PAF 406-98 surge suppression pressure relief valve
- Integral 10" reclosing pressure relief valve
- Designed for DOT 406 and MC306 cargo tanks
- Quick-open inspection hatch design
- Secondary safety catch included
- Certified to 49CFR178.345-5
- Test pressure rated to 36 PSIG
- Clamp ring and bolt secured construction
- Buna-N seal material
- Approximate weight: 31 lbs
Technical Specifications
| Model | PPVL720BXB |
|---|---|
| Product Type | Tank Truck Manhole Assembly |
| Manhole Size | 20" |
| Style | Clamp Ring |
| Cargo Tank Compatibility | DOT 406 and MC306 |
| Pressure Relief Valve | PAF 406-98 Surge Suppression Pressure Relief Valve |
| Reclosing Pressure Relief Valve | 10" |
| Test Pressure | 36 PSIG |
| Certification | 49CFR178.345-5 |
| Seal Material | Buna-N |
| Closure Construction | Clamp Ring and Bolt Secured |
| Inspection Access | Quick-Open Inspection Hatch |
| Safety Catch | Secondary Safety Catch |
| Approximate Weight | 31 lbs |
Pressure Relief System
PAF 406-98 Surge Suppression
The PPVL720BXB incorporates a PAF 406-98 surge suppression pressure relief valve as part of the manhole assembly.
10" Reclosing Relief Valve
The supplied product information identifies an integral 10" reclosing pressure relief valve for the assembly.
Cargo Tank Compatibility
The PPVL720BXB is designed for DOT 406 and MC306 cargo tank applications. Tank design, lading, seal material requirements, and applicable cargo tank specifications should be verified before installation.
Inspection & Access Features
Quick-Open Inspection Hatch
The assembly incorporates a quick-open inspection hatch to provide access for cargo tank inspection and maintenance.
Secondary Safety Catch
A secondary safety catch is included as part of the supplied manhole assembly configuration.
Clamp Ring Construction
The PPVL720BXB uses a clamp ring and bolt secured design for installation and closure. The supplied product information identifies Buna-N as the seal material.
Test Pressure & Certification
36 PSIG Test Pressure
The supplied product information lists a test pressure rating of 36 PSIG.
49CFR178.345-5
The manhole assembly is identified in the supplied product information as certified to 49CFR178.345-5.

Our specialists can help with product information and application questions for the PPVL720BXB 20" PAF 406-98 Tank Truck Manhole Assembly.
Email the GetPipe.com Team Visit Quick SupportFrequently Asked Questions
What is the PPVL720BXB?
The PPVL720BXB is a 20" clamp ring style tank truck manhole assembly designed for DOT 406 and MC306 cargo tank applications.
What pressure relief valve is included?
The supplied product information identifies a PAF 406-98 surge suppression pressure relief valve and an integral 10" reclosing pressure relief valve.
What is the test pressure rating?
The supplied product information lists a test pressure rating of 36 PSIG.
Is 36 PSIG the normal operating pressure?
The supplied information specifically identifies 36 PSIG as the test pressure. It does not provide a separate normal or maximum operating pressure.
What seal material is used?
The supplied product information identifies Buna-N as the seal material.
Does the assembly have an inspection hatch?
Yes. The PPVL720BXB features a quick-open inspection hatch.
Is a secondary safety catch included?
Yes. A secondary safety catch is included among the supplied product features.
What cargo tank types is the assembly designed for?
The supplied product information identifies DOT 406 and MC306 cargo tank applications.
What certification is listed for the PPVL720BXB?
The supplied product information identifies certification to 49CFR178.345-5.
How much does the assembly weigh?
The supplied product information lists an approximate weight of 31 lbs.
Important Ordering & Product Notes
- This listing covers the PPVL720BXB 20" PAF 406-98 Tank Truck Manhole Assembly.
- Manhole size is listed as 20".
- The assembly is designed for DOT 406 and MC306 cargo tanks.
- A PAF 406-98 surge suppression pressure relief valve is included.
- The supplied information identifies an integral 10" reclosing pressure relief valve.
- Seal material is listed as Buna-N.
- The supplied 36 PSIG rating is identified as test pressure and should not be interpreted as a maximum operating pressure.
- The assembly is identified as certified to 49CFR178.345-5.
- Approximate weight is listed as 31 lbs.
- Verify compatibility with tank design, lading, seal material requirements, and applicable cargo tank specifications before installation.
- Installation and service should be performed by qualified personnel following applicable transportation requirements and manufacturer instructions.