What are the common forging grades?

ASME/ASTM S/A105
ASME/ASTM S/A350 LF2
ASME/ASTM S/A182 F304 and F316

What is the difference between WPB and WPC?

Do all products have REACH & RoHS certification?

No. REACH and RoHS each have requirements that companies must follow to demonstrate compliance. 

What are REACH & RoHS?

REACH a& RoHS are European regulations and directives related to chemical substances permitted for use in products. 

Do all products come with a Pressure Equipment Directive (PED)?

No. Since the PED is for the European market not all manufacturers have undergone the expense of obtaining the PED certification.

Do I need a Pressure Equipment Directive (PED) in the United States?

No. A Pressure Equipment Directive (PED) is not intended for use in the United States. 

What is a Pressure Equipment Directive (PED)?

A Pressure Equipment Directive (PED) is a certification that allows manufacturers to sell their pressure equipment throughout the European Union without having to go through local approval in every member state.

Do all products come with CRN’s?

No. The CRN is manufacturer-specific, and not all manufacturers have gone through the expense of obtaining the CRN for their company.

Why do I need a Canadian Registration Number (CRN)?

A Canadian Registration Number (CRN) is required for each jurisdiction/province where PVF equipment is used. The CRN is manufacturer-specific, and each manufacturer will have to submit their designs for approval.

Commonly Used Acronyms in PVF

There are many commonly used acronyms in the PVF industry. Here is a guide to help you navigate product names and terminology. 

What is High Yield?

High Yield is a group of materials that have a higher yield and tensile strength than regular carbon steel. 

What is a Non-Approved product?

A Non-Approved product has not made the Approved Manufacturer List and may not be suitable for some application requisites.

What is an Approved product?

An Approved product refers to approval for use based on the product meets all necessary regulatory approvals and specifications. Generally applicable to domestic US projects, the Approved Manufacturer List (AML) provides details. 

What is a Butterfly Valve?

A Butterfly Valve is a quarter-turn valve used to control the flow of fluid through a piping system. There are three main types of Butterfly Valves: Concentric, Double Offset (AKA high performance), and Triple Offset. 

What is a Pfetzer valve?

Also commonly referred to as a widget, the pfetzer valve is the layman’s term for all parts, bits, and bobs related to the creation and assembly of things.

What is a Plug Valve?

A Plug Valve is a bi-directional quarter-turn valve used to control the flow of fluid through a piping system. 

What is a Ball Valve?

A Ball Valve is a bi-directional quarter-turn valve used to control the flow of fluid through a piping system. 

What is a Ball Check Valve?

A spring-loaded Ball Check Valve is designed to allow the flow in one direction and prevent it from reversing and flowing in the reverse direction. 

What is a Piston Check Valve?

Also known as a lift check, a spring-loaded piston check is designed to allow the flow in one direction and prevent it from reversing and flowing in the reverse direction.

What is a Duo Check Valve?

A duo check valve is a spring-loaded dual plate check valve that is designed to allow the flow in one direction and prevent it from reversing and flowing in the reverse direction.