V-Series Standard with Flange Connections

Models

VBF: Brass

VJF: Cast Iron

VSF: Cast Steel

VSSF: Stainless Steel

VJF‐SP: Cast Iron with Steel Parts

API 520 & 614 Approved
Chatter-free operation
Mount in any position
Suitable for continuous duty

Size Range: 1″ – 2″
Pressures: 3 – 1000 psi
Flow Rate: Up to 150 gpm

DOWNLOAD THE V‐SERIES SECTION PDF

Installation, Maintenance & Operation Assembly Number Identification Dimensions & Parts Performance Data

INSTALLATION, MAINTENANCE & OPERATION

Installation

Fulflo valves can be mounted in any position. A tee may be inserted in the pump discharge line to mount the valve. The correct size of the valve should be installed, preferably matching the pump discharge line. Screw the valve into the nipple in the tee, or in the case of the flange style, bolt the valve to the companion flange screwed into the nipple. When the valve is used for frequent bypassing of oil pressure, its outlet should be piped back to the tank. Care must be taken to have the discharge well below the oil level in the tank to prevent air entrainment and erratic operation.

Only if the valve is used as safety or overload relief and operates infrequently may its discharge be piped back into the pump suction line. Frequent or continuous operation under these conditions will cause excessive heating of the oil and possible damage.

Setting Valves

Valves may be set with a hydraulic hand pump for cracking pressure. If a test stand is available, the valve should be connected to the discharge header with the pump bypass open, and the bypass gradually closed until the desired pressure registers on the gauge. Adjust valve adjusting screw until valve slightly bleeds at the set bypass pressure and lock adjusting screw.

Fulflo valves are not designed to be positive shut-off and will pass a minimal amount of leakage before the set pressure. If a valve is required to bypass a given amount of fluid at a given pressure, a test stand having a flow meter in the pump discharge line must be available. With a valve adjusted for cracking pressure as above, continue closing the bypass until the required flow registers on the flow meter and observe pressure. Readjust pressure, if necessary, to obtain desired pressure at desired flow.

Maintenance & Operation

Fulflo valves provide reliable “chatter-free” operations when the system is free of abrasives and foreign matter. Continuous filtration of the liquid used is strongly recommended.

TYPICAL DISASSEMBLY OF STANDARD TYPE VALVE

To dismantle valve for inspection or cleaning:

1. Remove cap “B”

2. Remove O-Ring “E”

3. Remove lock nut “F”

4. Remove adjusting screw “C”

5. Remove retainer “D”

6. Remove spring “G”

7. Remove piston “I”

8. Remove stop ring “H” (Not Recommended-Special tooling is required to install new stop ring)

Inspect valve bore and piston for wear and scoring. Replace broken or damaged parts. Clean all parts thoroughly and re-assemble by reversing the above procedure.

ASSEMBLY NUMBER IDENTIFICATION CHART

Symbol Number	Designation	Code	Description
1	Style	None H	Standard Model Handwheel Model
2	Series	V
3	Material	J B S SS	Cast iron Brass Steel Stainless Steel (300 Series Stainless)
4	Connections	None F	Screw Connections Flange Connections 300# Flange Class Standard (250# Flange Class – Cast Iron Standard)
5	Size	-2 -3 -4 -5 -6 -7 -8	3/8” 1/2” 3/4” 1” 1^1/4” 1^1/2” 2”
6, 7, 8	ASA Flange Rating	None -150 -600	300# Flange Standard (no designation required)
9	Flange Style 150# and 600# Only	A B C D	Raised Face, Staggered Bolt Centers Smooth Face, Staggered Bolt Centers Raised Face, Bolts on Valve Centerline Smooth Face, Bolts on Valve Centerline
10	O-Ring Material	R RV RS RT RA EPR RN	Buna (standard) Viton Silicone Teflon Aflas Ethylene Propylene Neoprene
11	Options	SP P	Steel Parts (used on cast iron only) Panel Mount on Handwheel Series
12	Piston Material	/HS /SS /3SS	Hardened Steel 416 Stainless Steel 303 Stainless Steel (For Stainless Valves Only)
13	Spring (+/-1-5 PSI ON ALL SPRING RANGES)	/AS /US /WS /XS /YS /ZS	Pressure Range = 3 – 10 psi (spring color: black) Pressure Range = 7 – 35 psi (spring color: red) Pressure Range = 30 – 100 psi (spring color: green) Pressure Range = 60 – 175 psi (spring color: yellow) Pressure Range = 150 – 350 psi (spring color: white) Pressure Range = 300 – 500 psi (spring color: blue)
14	Setting		Desired Set Pressure

Examples

VJF-5RVSP/HS/WS
V	J	F	-5	RV	SP	/HS	/WS
Series	Cast Iron	Flanged	1”	Viton O-Ring	Steel Parts	H.S. Piston	WS Spring

VJF-5R/HS/WS
V	J	F	-5	R	/HS	/WS
Series	Cast Iron	Flanged	1”	Buna O-Ring	H.S. Piston	WS Spring

VJF-5-150AR/HS/WS
V	J	F	-5	-150	A	R	/HS	/WS
Series	Cast Iron	Flanged	1”	Rating	Style	Buna O-Ring	H.S. Piston	WS Spring

DIMENSIONS & PARTS

Dimensions in Inches

Valve Size	AA	BB
1″	9^1/2	3^1/2
1^1/4“	10^13/16	3^3/4
1^1/2“	12^7/16	4^1/16
2″	14^9/16	4^9/16

Note: Dimensions reflect 150# & 300# flange only

Cutaway Drawing

Parts List

			Valve Size
Sym.	Name	Model	1”	1^1/4”	1^1/2”	2”
A	Body	VJF, VJF-SP VBF VSF VSSF	500-F 500-BF 500-SF 500-SSF	600-F 600-BF 600-SF 600-SSF	700-F 700-BF 700-SF 700-SSF	800-F 800-BF 800-SF 800-SSF
B	Cap (O-Ring Seal)	VJF, VJF-SP VBF VSF VSSF	501-R 501-BR 501-SR 501-SSR	601-R 601-BR 601-SR 601-SSR	701-R 701-BR 701-SR 701-SSR	801-R 801-BR 801-SR 801-SSR
C	Adjusting Screw	VJF, VBF VSF, VJF-SP VSSF	502-B 502-S 502-SS	602-B 602-S 602-SS	702-B 702-S 702-SS	802-B 802-S 802-SS
D	Retainer	VJF, VBF VSF, VJF-SP VSSF	503-B 503-S 503-SS	603-B 603-S 603-SS	703-B 703-S 703-SS	803-B 803-S 803-SS
E	O-Ring⁺	VJF, VJF-SP VBF, VSF VSSF	504* 504-* 504-RT	604* 604-* 604-RT	704* 704-* 704-RT	804* 804-* 804-RT
F	Lock Nut	VJF, VJF-SP VSF, VBF VSSF	505-S 505-S 505-SS	605-S 605-S 605-SS	705-S 705-S 705-SS	805-S 805-S 805-SS
G	Spring⁺	All Models	507-**	607-**	707-**	807-**
H	Stop Ring	VJF, VBF VJF-SP, VSF VSSF	508-B 508-S 508-SS	608-B 608-S 608-SS	708-B 708-S 708-SS	808-B 808-S 808-SS
I	Piston⁺	Hardened Steel 416 Stainless Steel 303 Stainless Steel	506 506-A 506-SS	606 606-A 606-SS	706 706-A 706-SS	806 806-A 806-SS
B	Cap (Gasket Seal)	VJF, VJF-SP VBF VSF	501 501-B 501-S	601 601-B 601-S	701 701-B 701-S	801 801-B 801-S
E	Gasket⁺	VJF, VBF VJF-SP, VSF	504 504-S	604 604-S	704 704-S	804 804-S

+ Recommended spare parts

* See Assembly Number Identification Chart, Symbol Number 10

**See Assembly Number Identification Chart, Symbol Number 13

PERFORMANCE DATA

All valve tests 110˚F to 120˚F Oil Viscosity 150 SSU at 100˚F

(Charts good from 30 to 500 SSU)

Overpressure: The pressure increase or accumulation above the set pressure when the valve is discharging flow.