How do I adjust the flow on the Throttle valve used in hydraulic systems, type FPMB, and what is the permitted flow direction?

To adjust the flow on the Throttle valve used in hydraulic systems, type FPMB, rotate the control ring: turning the ring toward the closed position reduces the orifice and decreases flow; turning it toward the open position enlarges the orifice and increases flow. Regulation is continuous, allowing fine tuning of flow rate. Permitted flow direction for the Throttle valve used in hydraulic systems, type FPMB is A â A1 and A1 â A; the valve may be used in either direction within those ports. Additional relevant data: body material is carbon steel, galvanized; sealing is NBR; operating temperature range is -20Â°C to +90Â°C.

What maintenance is required for the Throttle valve used in hydraulic systems, type FPMB to ensure reliable operation?

For reliable operation of the Throttle valve used in hydraulic systems, type FPMB, perform the following maintenance: - Regular visual inspection for external damage, corrosion or loose fittings; check the galvanized body for coating wear. - Clean valve exterior and rotating ring to prevent contamination build-up that impedes adjustment. - Operate the rotating ring periodically through full range to prevent sticking and verify smooth flow regulation. - Check sealing (NBR) for wear, cracking or hardening-replace seals if any deterioration or leaks appear. - Inspect connections and hoses for leaks and proper torque; ensure flow direction A â A1 is respected. - Monitor fluid cleanliness and replace or filter hydraulic oil to prevent abrasive wear on internal parts. - Verify operation across temperature range (-20Â°C to +90Â°C); in cold conditions ensure seals remain flexible. - After maintenance, test for correct flow control and absence of leaks before returning to service.

Can Throttle valve used in hydraulic systems, type FPMB be used outside -20Â°C to +90Â°C range?

No. Throttle valve used in hydraulic systems, type FPMB Format is specified with sealing made of NBR (nitrile rubber) and an operating temperature range of -20Â°C to +90Â°C. Using it outside that range risks seal hardening, loss of elasticity, leakage at low temperatures, and swelling, softening or premature aging at high temperatures. Additionally, extreme temperatures can affect the galvanized carbon steel body and clearances, altering flow control performance and potentially causing malfunction or safety hazards. If service below -20Â°C or above +90Â°C is required, choose a valve with seals and materials rated for those temperatures (e.g., FKM/Viton, PTFE, or specially qualified components) or consult the manufacturer for suitable alternatives or certified low/high-temperature versions.

Throttle valve used in hydraulic systems, type FPMB

All products, Flow control valves/

Additional information

Material	CS – steel (cast iron)

Adjustable throttle valve type FPMB used in hydraulic systems as a flow control element. Flow regulation is achieved through a rotating ring. Permissible flow direction: A → A1, A1 → A. Material: carbon steel, galvanized (body). Sealing: NBR. Operating temperature: from -20°C to +90°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
DC-FPMB-04	FPMB throttling valve GW 1/4"	-	350	In stock	Enquiry
DC-FPMB-06	FPMB throttling valve GW 3/8"	-	350	In stock	Enquiry
DC-FPMB-08	FPMB throttling valve GW 1/2"	-	35	In stock	Enquiry
DC-FPMB-12	FPMB throttling valve GW 3/4	-	280	In stock	Enquiry
DC-FPMB-16	FPMB throttling valve GW 1"	-	250	In stock	Enquiry

Do you need a larger quantity of products or a bespoke quote?

Call us: +48 61 653 02 22 or email us: tubes@tubes-international.com

SEND ENQUIRY

Adjustable throttle valve type FPMB used in hydraulic systems as a flow control element. Flow regulation is achieved through a rotating ring. Permissible flow direction: A → A1, A1 → A. Material: carbon steel, galvanized (body). Sealing: NBR. Operating temperature: from -20°C to +90°C.